42646432 has 12 divisors (see below), whose sum is σ = 83960226. Its totient is φ = 21323200.

The previous prime is 42646391. The next prime is 42646463. The reversal of 42646432 is 23464624.

It can be written as a sum of positive squares in only one way, i.e., 25040016 + 17606416 = 5004^2 + 4196^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42646394 and 42646403.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666319 + ... + 666382.

Almost surely, 2^42646432 is an apocalyptic number.

It is an amenable number.

42646432 is a deficient number, since it is larger than the sum of its proper divisors (41313794).

42646432 is a wasteful number, since it uses less digits than its factorization.

42646432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332711 (or 1332703 counting only the distinct ones).

The product of its digits is 27648, while the sum is 31.

The square root of 42646432 is about 6530.4235697235. The cubic root of 42646432 is about 349.3769377551.

The spelling of 42646432 in words is "forty-two million, six hundred forty-six thousand, four hundred thirty-two".