402606542 has 32 divisors (see below), whose sum is σ = 690967200. Its totient is φ = 174400128.

The previous prime is 402606539. The next prime is 402606569. The reversal of 402606542 is 245606204.

It is a super-2 number, since 2×402606542² = 324184055322395528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50108 + ... + 57584.

It is an arithmetic number, because the mean of its divisors is an integer number (21592725).

Almost surely, 2^402606542 is an apocalyptic number.

402606542 is a deficient number, since it is larger than the sum of its proper divisors (288360658).

402606542 is a wasteful number, since it uses less digits than its factorization.

402606542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7620.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 402606542 is about 20065.0577372705. The cubic root of 402606542 is about 738.4032664060.

The spelling of 402606542 in words is "four hundred two million, six hundred six thousand, five hundred forty-two".