1245005456 has 40 divisors (see below), whose sum is σ = 2520106560. Its totient is φ = 594720896.

The previous prime is 1245005453. The next prime is 1245005483. The reversal of 1245005456 is 6545005421.

It is not an unprimeable number, because it can be changed into a prime (1245005453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426530 + ... + 429438.

It is an arithmetic number, because the mean of its divisors is an integer number (63002664).

Almost surely, 2^1245005456 is an apocalyptic number.

1245005456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1245005456 is an abundant number, since it is smaller than the sum of its proper divisors (1275101104).

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

1245005456 is a wasteful number, since it uses less digits than its factorization.

1245005456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103 (or 4097 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 1245005456 is about 35284.6348429454. The cubic root of 1245005456 is about 1075.7807073730.

The spelling of 1245005456 in words is "one billion, two hundred forty-five million, five thousand, four hundred fifty-six".