344642742 has 32 divisors (see below), whose sum is σ = 766886400. Its totient is φ = 114728904.

The previous prime is 344642723. The next prime is 344642747. The reversal of 344642742 is 247246443.

344642742 is a `hidden beast` number, since 3 + 4 + 4 + 642 + 7 + 4 + 2 = 666.

It is a super-2 number, since 2×344642742² = 237557239226557128, which contains 22 as substring.

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 344642697 and 344642706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344642747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41503 + ... + 49109.

It is an arithmetic number, because the mean of its divisors is an integer number (23965200).

Almost surely, 2^344642742 is an apocalyptic number.

344642742 is an abundant number, since it is smaller than the sum of its proper divisors (422243658).

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

344642742 is a wasteful number, since it uses less digits than its factorization.

344642742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8457 (or 8451 counting only the distinct ones).

The product of its digits is 129024, while the sum is 36.

The square root of 344642742 is about 18564.5560679484. The cubic root of 344642742 is about 701.1157322506.

The spelling of 344642742 in words is "three hundred forty-four million, six hundred forty-two thousand, seven hundred forty-two".