1012421864 has 16 divisors (see below), whose sum is σ = 1900370400. Its totient is φ = 505656432.

The previous prime is 1012421863. The next prime is 1012421881. The reversal of 1012421864 is 4681242101.

It is not an unprimeable number, because it can be changed into a prime (1012421863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61502 + ... + 76205.

It is an arithmetic number, because the mean of its divisors is an integer number (118773150).

Almost surely, 2^1012421864 is an apocalyptic number.

It is an amenable number.

1012421864 is a deficient number, since it is larger than the sum of its proper divisors (887948536).

1012421864 is a wasteful number, since it uses less digits than its factorization.

1012421864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138632 (or 138628 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1012421864 is about 31818.5773409183. The cubic root of 1012421864 is about 1004.1235939338.

Adding to 1012421864 its reverse (4681242101), we get a palindrome (5693663965).

The spelling of 1012421864 in words is "one billion, twelve million, four hundred twenty-one thousand, eight hundred sixty-four".