121139634 has 80 divisors (see below), whose sum is σ = 306123840. Its totient is φ = 31305120.

The previous prime is 121139593. The next prime is 121139651. The reversal of 121139634 is 436931121.

It is a super-3 number, since 3×121139634³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 614824 + ... + 615020.

It is an arithmetic number, because the mean of its divisors is an integer number (3826548).

Almost surely, 2^121139634 is an apocalyptic number.

121139634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121139634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153061920).

121139634 is an abundant number, since it is smaller than the sum of its proper divisors (184984206).

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

121139634 is an equidigital number, since it uses as much as digits as its factorization.

121139634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253 (or 220 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 121139634 is about 11006.3451699463. The cubic root of 121139634 is about 494.7989306823.

The spelling of 121139634 in words is "one hundred twenty-one million, one hundred thirty-nine thousand, six hundred thirty-four".