1245255140 has 24 divisors (see below), whose sum is σ = 2664378360. Its totient is φ = 488703488.

The previous prime is 1245255139. The next prime is 1245255161. The reversal of 1245255140 is 415525421.

It can be written as a sum of positive squares in 4 ways, for example, as 177795556 + 1067459584 = 13334^2 + 32672^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586325 + ... + 588444.

It is an arithmetic number, because the mean of its divisors is an integer number (111015765).

Almost surely, 2^1245255140 is an apocalyptic number.

1245255140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245255140 is an abundant number, since it is smaller than the sum of its proper divisors (1419123220).

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

1245255140 is a wasteful number, since it uses less digits than its factorization.

1245255140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174831 (or 1174829 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 1245255140 is about 35288.1728061967. The cubic root of 1245255140 is about 1075.8526179751.

The spelling of 1245255140 in words is "one billion, two hundred forty-five million, two hundred fifty-five thousand, one hundred forty".