420240992 has 24 divisors (see below), whose sum is σ = 827874432. Its totient is φ = 209987200.

The previous prime is 420240983. The next prime is 420241039. The reversal of 420240992 is 299042024.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 64442 + ... + 70662.

It is an arithmetic number, because the mean of its divisors is an integer number (34494768).

Almost surely, 2^420240992 is an apocalyptic number.

It is an amenable number.

420240992 is a deficient number, since it is larger than the sum of its proper divisors (407633440).

420240992 is a wasteful number, since it uses less digits than its factorization.

420240992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8342 (or 8334 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 420240992 is about 20499.7802915056. The cubic root of 420240992 is about 749.0304461234.

The spelling of 420240992 in words is "four hundred twenty million, two hundred forty thousand, nine hundred ninety-two".