121738452 has 24 divisors (see below), whose sum is σ = 309880032. Its totient is φ = 36890400.

The previous prime is 121738451. The next prime is 121738459. The reversal of 121738452 is 254837121.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121738451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460999 + ... + 461262.

It is an arithmetic number, because the mean of its divisors is an integer number (12911668).

Almost surely, 2^121738452 is an apocalyptic number.

121738452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121738452 is an abundant number, since it is smaller than the sum of its proper divisors (188141580).

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

121738452 is a wasteful number, since it uses less digits than its factorization.

121738452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922279 (or 922277 counting only the distinct ones).

The product of its digits is 13440, while the sum is 33.

The square root of 121738452 is about 11033.5149431176. The cubic root of 121738452 is about 495.6128884208.

The spelling of 121738452 in words is "one hundred twenty-one million, seven hundred thirty-eight thousand, four hundred fifty-two".