1245145392 has 160 divisors (see below), whose sum is σ = 3892608000. Its totient is φ = 379572480.

The previous prime is 1245145387. The next prime is 1245145397. The reversal of 1245145392 is 2935415421.

1245145392 is a `hidden beast` number, since 1 + 2 + 4 + 514 + 53 + 92 = 666.

It is an interprime number because it is at equal distance from previous prime (1245145387) and next prime (1245145397).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1245145397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235417 + ... + 240647.

It is an arithmetic number, because the mean of its divisors is an integer number (24328800).

Almost surely, 2^1245145392 is an apocalyptic number.

1245145392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245145392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1946304000).

1245145392 is an abundant number, since it is smaller than the sum of its proper divisors (2647462608).

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

1245145392 is a wasteful number, since it uses less digits than its factorization.

1245145392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5296 (or 5284 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 1245145392 is about 35286.6177466756. The cubic root of 1245145392 is about 1075.8210110275.

The spelling of 1245145392 in words is "one billion, two hundred forty-five million, one hundred forty-five thousand, three hundred ninety-two".