42438668 has 12 divisors (see below), whose sum is σ = 74324712. Its totient is φ = 21203040.

The previous prime is 42438653. The next prime is 42438673. The reversal of 42438668 is 86683424.

It is a super-2 number, since 2×42438668² = 3602081083228448, which contains 22 as substring.

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, 3248 + ... + 9768.

It is an arithmetic number, because the mean of its divisors is an integer number (6193726).

Almost surely, 2^42438668 is an apocalyptic number.

It is an amenable number.

42438668 is a deficient number, since it is larger than the sum of its proper divisors (31886044).

42438668 is a wasteful number, since it uses less digits than its factorization.

42438668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8152 (or 8150 counting only the distinct ones).

The product of its digits is 221184, while the sum is 41.

The square root of 42438668 is about 6514.4967572331. The cubic root of 42438668 is about 348.8086514667.

The spelling of 42438668 in words is "forty-two million, four hundred thirty-eight thousand, six hundred sixty-eight".