1245155320 has 32 divisors (see below), whose sum is σ = 2806027920. Its totient is φ = 497274880.

The previous prime is 1245155311. The next prime is 1245155323. The reversal of 1245155320 is 235515421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245155323) 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, 1359 + ... + 49921.

Almost surely, 2^1245155320 is an apocalyptic number.

1245155320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1245155320 is an abundant number, since it is smaller than the sum of its proper divisors (1560872600).

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

1245155320 is a wasteful number, since it uses less digits than its factorization.

1245155320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49215 (or 49211 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1245155320 is about 35286.7584229552. The cubic root of 1245155320 is about 1075.8238703248.

The spelling of 1245155320 in words is "one billion, two hundred forty-five million, one hundred fifty-five thousand, three hundred twenty".