345242540 has 24 divisors (see below), whose sum is σ = 763168560. Its totient is φ = 130828608.

The previous prime is 345242539. The next prime is 345242563. The reversal of 345242540 is 45242543.

It is a super-2 number, since 2×345242540² = 238384822851303200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453887 + ... + 454646.

It is an arithmetic number, because the mean of its divisors is an integer number (31798690).

Almost surely, 2^345242540 is an apocalyptic number.

It is an amenable number.

345242540 is an abundant number, since it is smaller than the sum of its proper divisors (417926020).

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

345242540 is a wasteful number, since it uses less digits than its factorization.

345242540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908561 (or 908559 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 345242540 is about 18580.7034312482. The cubic root of 345242540 is about 701.5222247751.

The spelling of 345242540 in words is "three hundred forty-five million, two hundred forty-two thousand, five hundred forty".