121130442 has 12 divisors (see below), whose sum is σ = 262449330. Its totient is φ = 40376808.

The previous prime is 121130417. The next prime is 121130447. The reversal of 121130442 is 244031121.

It can be written as a sum of positive squares in only one way, i.e., 119443041 + 1687401 = 10929^2 + 1299^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6729469 = 121130442 / (1 + 2 + 1 + 1 + 3 + 0 + 4 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (121130447) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3364717 + ... + 3364752.

Almost surely, 2^121130442 is an apocalyptic number.

121130442 is an abundant number, since it is smaller than the sum of its proper divisors (141318888).

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

121130442 is a wasteful number, since it uses less digits than its factorization.

121130442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6729477 (or 6729474 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 121130442 is about 11005.9275847154. The cubic root of 121130442 is about 494.7864153541.

Adding to 121130442 its reverse (244031121), we get a palindrome (365161563).

It can be divided in two parts, 1211304 and 42, that added together give a triangular number (1211346 = T₁₅₅₆).

The spelling of 121130442 in words is "one hundred twenty-one million, one hundred thirty thousand, four hundred forty-two".