1254151278 has 48 divisors (see below), whose sum is σ = 2888196480. Its totient is φ = 392191632.

The previous prime is 1254151271. The next prime is 1254151279. The reversal of 1254151278 is 8721514521.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254151271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17425 + ... + 53027.

It is an arithmetic number, because the mean of its divisors is an integer number (60170760).

Almost surely, 2^1254151278 is an apocalyptic number.

1254151278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1254151278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1444098240).

1254151278 is an abundant number, since it is smaller than the sum of its proper divisors (1634045202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1254151278 is a wasteful number, since it uses less digits than its factorization.

1254151278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35733 (or 35730 counting only the distinct ones).

The product of its digits is 22400, while the sum is 36.

The square root of 1254151278 is about 35413.9983339922. The cubic root of 1254151278 is about 1078.4085149976.

Adding to 1254151278 its reverse (8721514521), we get a palindrome (9975665799).

The spelling of 1254151278 in words is "one billion, two hundred fifty-four million, one hundred fifty-one thousand, two hundred seventy-eight".