147121938 has 48 divisors (see below), whose sum is σ = 339745536. Its totient is φ = 45904320.

The previous prime is 147121907. The next prime is 147121951. The reversal of 147121938 is 839121741.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15678 + ... + 23238.

It is an arithmetic number, because the mean of its divisors is an integer number (7078032).

Almost surely, 2^147121938 is an apocalyptic number.

147121938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 147121938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169872768).

147121938 is an abundant number, since it is smaller than the sum of its proper divisors (192623598).

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

147121938 is a wasteful number, since it uses less digits than its factorization.

147121938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7639 (or 7636 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 147121938 is about 12129.3832489538. The cubic root of 147121938 is about 527.9090967817.

It can be divided in two parts, 1471 and 21938, that added together give a square (23409 = 153²).

The spelling of 147121938 in words is "one hundred forty-seven million, one hundred twenty-one thousand, nine hundred thirty-eight".