1264139230 has 32 divisors (see below), whose sum is σ = 2310363648. Its totient is φ = 497952000.

The previous prime is 1264139221. The next prime is 1264139269. The reversal of 1264139230 is 329314621.

It is a junction number, because it is equal to n+sod(n) for n = 1264139192 and 1264139201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189634 + ... + 196186.

It is an arithmetic number, because the mean of its divisors is an integer number (72198864).

Almost surely, 2^1264139230 is an apocalyptic number.

1264139230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1264139230 is a deficient number, since it is larger than the sum of its proper divisors (1046224418).

1264139230 is a wasteful number, since it uses less digits than its factorization.

1264139230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6852.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1264139230 is about 35554.7356902003. The cubic root of 1264139230 is about 1081.2637327491.

The spelling of 1264139230 in words is "one billion, two hundred sixty-four million, one hundred thirty-nine thousand, two hundred thirty".