121634930 has 16 divisors (see below), whose sum is σ = 219648024. Its totient is φ = 48497280.

The previous prime is 121634897. The next prime is 121635029. The reversal of 121634930 is 39436121.

It can be written as a sum of positive squares in 4 ways, for example, as 82609921 + 39025009 = 9089^2 + 6247^2 .

It is a super-2 number, since 2×121634930² = 29590112392209800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121634893 and 121634902.

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, 16301 + ... + 22560.

Almost surely, 2^121634930 is an apocalyptic number.

121634930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121634930 is a deficient number, since it is larger than the sum of its proper divisors (98013094).

121634930 is a wasteful number, since it uses less digits than its factorization.

121634930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39181.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 121634930 is about 11028.8226932887. The cubic root of 121634930 is about 495.4723647911.

The spelling of 121634930 in words is "one hundred twenty-one million, six hundred thirty-four thousand, nine hundred thirty".