351747942 has 32 divisors (see below), whose sum is σ = 865842432. Its totient is φ = 92768544.

The previous prime is 351747919. The next prime is 351747961. The reversal of 351747942 is 249747153.

It is a super-2 number, since 2×351747942² = 247453229402470728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 351747894 and 351747903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321568 + ... + 322659.

It is an arithmetic number, because the mean of its divisors is an integer number (27057576).

Almost surely, 2^351747942 is an apocalyptic number.

351747942 is an abundant number, since it is smaller than the sum of its proper divisors (514094490).

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

351747942 is a wasteful number, since it uses less digits than its factorization.

351747942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644252.

The product of its digits is 211680, while the sum is 42.

The square root of 351747942 is about 18754.9444680596. The cubic root of 351747942 is about 705.9010941438.

The spelling of 351747942 in words is "three hundred fifty-one million, seven hundred forty-seven thousand, nine hundred forty-two".