1012421250 has 120 divisors (see below), whose sum is σ = 2830493952. Its totient is φ = 261180000.

The previous prime is 1012421243. The next prime is 1012421279. The reversal of 1012421250 is 521242101.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 347299 + ... + 350201.

Almost surely, 2^1012421250 is an apocalyptic number.

1012421250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012421250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1415246976).

1012421250 is an abundant number, since it is smaller than the sum of its proper divisors (1818072702).

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

1012421250 is a wasteful number, since it uses less digits than its factorization.

1012421250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962 (or 2944 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1012421250 is about 31818.5676924654. The cubic root of 1012421250 is about 1004.1233909447.

Adding to 1012421250 its reverse (521242101), we get a palindrome (1533663351).

The spelling of 1012421250 in words is "one billion, twelve million, four hundred twenty-one thousand, two hundred fifty".