3138420372 has 24 divisors (see below), whose sum is σ = 7339905216. Its totient is φ = 1043722368.

The previous prime is 3138420301. The next prime is 3138420407. The reversal of 3138420372 is 2730248313.

3138420372 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296808 + ... + 307199.

It is an arithmetic number, because the mean of its divisors is an integer number (305829384).

Almost surely, 2^3138420372 is an apocalyptic number.

It is an amenable number.

3138420372 is an abundant number, since it is smaller than the sum of its proper divisors (4201484844).

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

3138420372 is a wasteful number, since it uses less digits than its factorization.

3138420372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604447 (or 604445 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 3138420372 is about 56021.6062961426. The cubic root of 3138420372 is about 1464.0987552451.

Adding to 3138420372 its reverse (2730248313), we get a palindrome (5868668685).

The spelling of 3138420372 in words is "three billion, one hundred thirty-eight million, four hundred twenty thousand, three hundred seventy-two".