423406642 has 16 divisors (see below), whose sum is σ = 643852800. Its totient is φ = 208801120.

The previous prime is 423406637. The next prime is 423406657. The reversal of 423406642 is 246604324.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73959 + ... + 79477.

It is an arithmetic number, because the mean of its divisors is an integer number (40240800).

Almost surely, 2^423406642 is an apocalyptic number.

423406642 is a deficient number, since it is larger than the sum of its proper divisors (220446158).

423406642 is a wasteful number, since it uses less digits than its factorization.

423406642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041.

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

The square root of 423406642 is about 20576.8472317797. The cubic root of 423406642 is about 750.9065435007.

The spelling of 423406642 in words is "four hundred twenty-three million, four hundred six thousand, six hundred forty-two".