42002546 has 8 divisors (see below), whose sum is σ = 66709980. Its totient is φ = 19765888.

The previous prime is 42002539. The next prime is 42002557. The reversal of 42002546 is 64520024.

It can be written as a sum of positive squares in 2 ways, for example, as 40768225 + 1234321 = 6385^2 + 1111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 617651 + ... + 617718.

Almost surely, 2^42002546 is an apocalyptic number.

42002546 is a deficient number, since it is larger than the sum of its proper divisors (24707434).

42002546 is a wasteful number, since it uses less digits than its factorization.

42002546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235388.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 42002546 is about 6480.9371235956. The cubic root of 42002546 is about 347.6096881275.

The spelling of 42002546 in words is "forty-two million, two thousand, five hundred forty-six".