307713042 has 144 divisors (see below), whose sum is σ = 854485632. Its totient is φ = 79289280.

The previous prime is 307713023. The next prime is 307713047. The reversal of 307713042 is 240317703.

It is a junction number, because it is equal to n+sod(n) for n = 307712997 and 307713015.

It is not an unprimeable number, because it can be changed into a prime (307713047) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 538617 + ... + 539187.

It is an arithmetic number, because the mean of its divisors is an integer number (5933928).

Almost surely, 2^307713042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 307713042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427242816).

307713042 is an abundant number, since it is smaller than the sum of its proper divisors (546772590).

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

307713042 is a wasteful number, since it uses less digits than its factorization.

307713042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 307713042 is about 17541.7513948864. The cubic root of 307713042 is about 675.1215451906.

The spelling of 307713042 in words is "three hundred seven million, seven hundred thirteen thousand, forty-two".