42312646 has 4 divisors (see below), whose sum is σ = 63468972. Its totient is φ = 21156322.

The previous prime is 42312629. The next prime is 42312649. The reversal of 42312646 is 64621324.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42312649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10578160 + ... + 10578163.

It is an arithmetic number, because the mean of its divisors is an integer number (15867243).

Almost surely, 2^42312646 is an apocalyptic number.

42312646 is a deficient number, since it is larger than the sum of its proper divisors (21156326).

42312646 is a wasteful number, since it uses less digits than its factorization.

42312646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21156325.

The product of its digits is 6912, while the sum is 28.

The square root of 42312646 is about 6504.8171380908. The cubic root of 42312646 is about 348.4630456889.

The spelling of 42312646 in words is "forty-two million, three hundred twelve thousand, six hundred forty-six".