1264260123 has 24 divisors (see below), whose sum is σ = 2178772560. Its totient is φ = 722433600.

The previous prime is 1264260119. The next prime is 1264260149. The reversal of 1264260123 is 3210624621.

1264260123 is a `hidden beast` number, since 1 + 2 + 642 + 6 + 0 + 12 + 3 = 666.

It is not a de Polignac number, because 1264260123 - 2² = 1264260119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1264260103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 476478 + ... + 479123.

It is an arithmetic number, because the mean of its divisors is an integer number (90782190).

Almost surely, 2^1264260123 is an apocalyptic number.

1264260123 is a deficient number, since it is larger than the sum of its proper divisors (914512437).

1264260123 is an equidigital number, since it uses as much as digits as its factorization.

1264260123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955624 (or 955611 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1264260123 is about 35556.4357465705. The cubic root of 1264260123 is about 1081.2981996935.

Adding to 1264260123 its reverse (3210624621), we get a palindrome (4474884744).

The spelling of 1264260123 in words is "one billion, two hundred sixty-four million, two hundred sixty thousand, one hundred twenty-three".