121472042 has 4 divisors (see below), whose sum is σ = 182208066. Its totient is φ = 60736020.

The previous prime is 121472041. The next prime is 121472051. The reversal of 121472042 is 240274121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 119486761 + 1985281 = 10931^2 + 1409^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121471999 and 121472017.

It is not an unprimeable number, because it can be changed into a prime (121472041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30368009 + ... + 30368012.

Almost surely, 2^121472042 is an apocalyptic number.

121472042 is a deficient number, since it is larger than the sum of its proper divisors (60736024).

121472042 is an equidigital number, since it uses as much as digits as its factorization.

121472042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60736023.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 121472042 is about 11021.4355689266. The cubic root of 121472042 is about 495.2510945919.

The spelling of 121472042 in words is "one hundred twenty-one million, four hundred seventy-two thousand, forty-two".