42640502 has 8 divisors (see below), whose sum is σ = 65689536. Its totient is φ = 20743992.

The previous prime is 42640489. The next prime is 42640511. The reversal of 42640502 is 20504624.

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

It is a congruent number.

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, 288038 + ... + 288185.

It is an arithmetic number, because the mean of its divisors is an integer number (8211192).

Almost surely, 2^42640502 is an apocalyptic number.

42640502 is a deficient number, since it is larger than the sum of its proper divisors (23049034).

42640502 is a wasteful number, since it uses less digits than its factorization.

42640502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576262.

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

The square root of 42640502 is about 6529.9695251969. The cubic root of 42640502 is about 349.3607433461.

The spelling of 42640502 in words is "forty-two million, six hundred forty thousand, five hundred two".