121172434 has 16 divisors (see below), whose sum is σ = 184757760. Its totient is φ = 59590720.

The previous prime is 121172431. The next prime is 121172437. The reversal of 121172434 is 434271121.

It is an interprime number because it is at equal distance from previous prime (121172431) and next prime (121172437).

It is a super-2 number, since 2×121172434² = 29365517522968712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121172399 and 121172408.

It is not an unprimeable number, because it can be changed into a prime (121172431) 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, 83487 + ... + 84925.

It is an arithmetic number, because the mean of its divisors is an integer number (11547360).

Almost surely, 2^121172434 is an apocalyptic number.

121172434 is a deficient number, since it is larger than the sum of its proper divisors (63585326).

121172434 is a wasteful number, since it uses less digits than its factorization.

121172434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105.

The product of its digits is 1344, while the sum is 25.

The square root of 121172434 is about 11007.8351186780. The cubic root of 121172434 is about 494.8435842220.

The spelling of 121172434 in words is "one hundred twenty-one million, one hundred seventy-two thousand, four hundred thirty-four".