121241042 has 16 divisors (see below), whose sum is σ = 207372312. Its totient is φ = 52665600.

The previous prime is 121241041. The next prime is 121241053. The reversal of 121241042 is 240142121.

It can be written as a sum of positive squares in 4 ways, for example, as 76230361 + 45010681 = 8731^2 + 6709^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 121241042.

It is not an unprimeable number, because it can be changed into a prime (121241041) 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, 136709 + ... + 137592.

Almost surely, 2^121241042 is an apocalyptic number.

121241042 is a deficient number, since it is larger than the sum of its proper divisors (86131270).

121241042 is a wasteful number, since it uses less digits than its factorization.

121241042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274333.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 121241042 is about 11010.9510034329. The cubic root of 121241042 is about 494.9369603086.

Adding to 121241042 its reverse (240142121), we get a palindrome (361383163).

The spelling of 121241042 in words is "one hundred twenty-one million, two hundred forty-one thousand, forty-two".