1379342520 has 240 divisors, whose sum is σ = 4801313880. Its totient is φ = 355155840.

The previous prime is 1379342513. The next prime is 1379342539. The reversal of 1379342520 is 252439731.

1379342520 is a `hidden beast` number, since 1 + 3 + 7 + 93 + 42 + 520 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3113419 + ... + 3113861.

Almost surely, 2^1379342520 is an apocalyptic number.

1379342520 is a gapful number since it is divisible by the number (10) 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 1379342520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2400656940).

1379342520 is an abundant number, since it is smaller than the sum of its proper divisors (3421971360).

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

1379342520 is a wasteful number, since it uses less digits than its factorization.

1379342520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 1379342520 is about 37139.5008043996. The cubic root of 1379342520 is about 1113.1594427242.

The spelling of 1379342520 in words is "one billion, three hundred seventy-nine million, three hundred forty-two thousand, five hundred twenty".