1245405156 has 24 divisors (see below), whose sum is σ = 2906764224. Its totient is φ = 415018080.

The previous prime is 1245405151. The next prime is 1245405157. The reversal of 1245405156 is 6515045421.

It is not an unprimeable number, because it can be changed into a prime (1245405151) 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, 37041 + ... + 62151.

It is an arithmetic number, because the mean of its divisors is an integer number (121115176).

Almost surely, 2^1245405156 is an apocalyptic number.

It is an amenable number.

1245405156 is an abundant number, since it is smaller than the sum of its proper divisors (1661359068).

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

1245405156 is a wasteful number, since it uses less digits than its factorization.

1245405156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29251 (or 29249 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 1245405156 is about 35290.2983268773. The cubic root of 1245405156 is about 1075.8958189280.

The spelling of 1245405156 in words is "one billion, two hundred forty-five million, four hundred five thousand, one hundred fifty-six".