1379145420 has 96 divisors (see below), whose sum is σ = 4354828800. Its totient is φ = 362273472.

The previous prime is 1379145409. The next prime is 1379145461. The reversal of 1379145420 is 245419731.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17121 + ... + 55239.

It is an arithmetic number, because the mean of its divisors is an integer number (45362800).

Almost surely, 2^1379145420 is an apocalyptic number.

1379145420 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 1379145420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2177414400).

1379145420 is an abundant number, since it is smaller than the sum of its proper divisors (2975683380).

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

1379145420 is a wasteful number, since it uses less digits than its factorization.

1379145420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38204 (or 38196 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1379145420 is about 37136.8472005904. The cubic root of 1379145420 is about 1113.1064188682.

The spelling of 1379145420 in words is "one billion, three hundred seventy-nine million, one hundred forty-five thousand, four hundred twenty".