121536434 has 16 divisors (see below), whose sum is σ = 193730616. Its totient is φ = 56985600.

The previous prime is 121536433. The next prime is 121536449. The reversal of 121536434 is 434635121.

It can be written as a sum of positive squares in 4 ways, for example, as 121110025 + 426409 = 11005^2 + 653^2 .

It is a super-2 number, since 2×121536434² = 29542209578872712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121536397 and 121536406.

It is not an unprimeable number, because it can be changed into a prime (121536433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3194 + ... + 15914.

Almost surely, 2^121536434 is an apocalyptic number.

121536434 is a deficient number, since it is larger than the sum of its proper divisors (72194182).

121536434 is a wasteful number, since it uses less digits than its factorization.

121536434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13021.

The product of its digits is 8640, while the sum is 29.

The square root of 121536434 is about 11024.3563984479. The cubic root of 121536434 is about 495.3385895541.

The spelling of 121536434 in words is "one hundred twenty-one million, five hundred thirty-six thousand, four hundred thirty-four".