420442507394 has 64 divisors (see below), whose sum is σ = 791093350656. Its totient is φ = 163139768064.

The previous prime is 420442507393. The next prime is 420442507453. The reversal of 420442507394 is 493705244024.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (420442507393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50126069 + ... + 50134455.

It is an arithmetic number, because the mean of its divisors is an integer number (12360833604).

Almost surely, 2^420442507394 is an apocalyptic number.

420442507394 is a deficient number, since it is larger than the sum of its proper divisors (370650843262).

420442507394 is a wasteful number, since it uses less digits than its factorization.

420442507394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13659.

The product of its (nonzero) digits is 967680, while the sum is 44.

The spelling of 420442507394 in words is "four hundred twenty billion, four hundred forty-two million, five hundred seven thousand, three hundred ninety-four".