1264562420 has 48 divisors (see below), whose sum is σ = 2925732096. Its totient is φ = 455280000.

The previous prime is 1264562413. The next prime is 1264562443. The reversal of 1264562420 is 242654621.

It is a super-2 number, since 2×1264562420² = 3198236228152512800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6236 + ... + 50675.

It is an arithmetic number, because the mean of its divisors is an integer number (60952752).

Almost surely, 2^1264562420 is an apocalyptic number.

1264562420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1264562420 is an abundant number, since it is smaller than the sum of its proper divisors (1661169676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1264562420 is a wasteful number, since it uses less digits than its factorization.

1264562420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57032 (or 57030 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 1264562420 is about 35560.6864388189. The cubic root of 1264562420 is about 1081.3843758283.

The spelling of 1264562420 in words is "one billion, two hundred sixty-four million, five hundred sixty-two thousand, four hundred twenty".