121424453042 has 4 divisors (see below), whose sum is σ = 182136679566. Its totient is φ = 60712226520.

The previous prime is 121424453039. The next prime is 121424453063. The reversal of 121424453042 is 240354424121.

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., 86407190401 + 35017262641 = 293951^2 + 187129^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30356113259 + ... + 30356113262.

Almost surely, 2^121424453042 is an apocalyptic number.

121424453042 is a deficient number, since it is larger than the sum of its proper divisors (60712226524).

121424453042 is an equidigital number, since it uses as much as digits as its factorization.

121424453042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60712226523.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 121424453042 its reverse (240354424121), we get a palindrome (361778877163).

The spelling of 121424453042 in words is "one hundred twenty-one billion, four hundred twenty-four million, four hundred fifty-three thousand, forty-two".