121502042 has 8 divisors (see below), whose sum is σ = 183260532. Its totient is φ = 60415200.

The previous prime is 121502041. The next prime is 121502137. The reversal of 121502042 is 240205121.

It can be written as a sum of positive squares in 2 ways, for example, as 121462441 + 39601 = 11021^2 + 199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121502042.

It is not an unprimeable number, because it can be changed into a prime (121502041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167459 + ... + 168182.

Almost surely, 2^121502042 is an apocalyptic number.

121502042 is a deficient number, since it is larger than the sum of its proper divisors (61758490).

121502042 is a wasteful number, since it uses less digits than its factorization.

121502042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335824.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 121502042 is about 11022.7964691361. The cubic root of 121502042 is about 495.2918620246.

Adding to 121502042 its reverse (240205121), we get a palindrome (361707163).

The spelling of 121502042 in words is "one hundred twenty-one million, five hundred two thousand, forty-two".