1547844342 has 48 divisors (see below), whose sum is σ = 3407683440. Its totient is φ = 468357120.

The previous prime is 1547844307. The next prime is 1547844349. The reversal of 1547844342 is 2434487451.

1547844342 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1547844342² = 4791644214122825928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1547844294 and 1547844303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1547844349) 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, 731478 + ... + 733590.

It is an arithmetic number, because the mean of its divisors is an integer number (70993405).

Almost surely, 2^1547844342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1547844342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1703841720).

1547844342 is an abundant number, since it is smaller than the sum of its proper divisors (1859839098).

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

1547844342 is a wasteful number, since it uses less digits than its factorization.

1547844342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149 (or 3138 counting only the distinct ones).

The product of its digits is 430080, while the sum is 42.

The square root of 1547844342 is about 39342.6529608770. The cubic root of 1547844342 is about 1156.7577770234.

The spelling of 1547844342 in words is "one billion, five hundred forty-seven million, eight hundred forty-four thousand, three hundred forty-two".