42646544 has 10 divisors (see below), whose sum is σ = 82627710. Its totient is φ = 21323264.

The previous prime is 42646537. The next prime is 42646553. The reversal of 42646544 is 44564624.

It can be written as a sum of positive squares in only one way, i.e., 37356544 + 5290000 = 6112^2 + 2300^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332689 + ... + 1332720.

It is an arithmetic number, because the mean of its divisors is an integer number (8262771).

Almost surely, 2^42646544 is an apocalyptic number.

It is an amenable number.

42646544 is a deficient number, since it is larger than the sum of its proper divisors (39981166).

42646544 is a wasteful number, since it uses less digits than its factorization.

42646544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665417 (or 2665411 counting only the distinct ones).

The product of its digits is 92160, while the sum is 35.

The square root of 42646544 is about 6530.4321449656. The cubic root of 42646544 is about 349.3772436047.

The spelling of 42646544 in words is "forty-two million, six hundred forty-six thousand, five hundred forty-four".