1245123264 has 112 divisors (see below), whose sum is σ = 4107338496. Its totient is φ = 323404800.

The previous prime is 1245123221. The next prime is 1245123281. The reversal of 1245123264 is 4623215421.

It is a tau number, because it is divible by the number of its divisors (112).

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, 27327 + ... + 56894.

Almost surely, 2^1245123264 is an apocalyptic number.

1245123264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1245123264 is an abundant number, since it is smaller than the sum of its proper divisors (2862215232).

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

1245123264 is a wasteful number, since it uses less digits than its factorization.

1245123264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84254 (or 84244 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 1245123264 is about 35286.3041986548. The cubic root of 1245123264 is about 1075.8146380346.

Adding to 1245123264 its reverse (4623215421), we get a palindrome (5868338685).

The spelling of 1245123264 in words is "one billion, two hundred forty-five million, one hundred twenty-three thousand, two hundred sixty-four".