121433240042 has 16 divisors (see below), whose sum is σ = 183120166152. Its totient is φ = 60393338880.

The previous prime is 121433240023. The next prime is 121433240051. The reversal of 121433240042 is 240042334121.

It can be written as a sum of positive squares in 4 ways, for example, as 114547725601 + 6885514441 = 338449^2 + 82979^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121433239993 and 121433240020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1634618 + ... + 1707290.

Almost surely, 2^121433240042 is an apocalyptic number.

121433240042 is a deficient number, since it is larger than the sum of its proper divisors (61686926110).

121433240042 is a wasteful number, since it uses less digits than its factorization.

121433240042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77113.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 121433240042 its reverse (240042334121), we get a palindrome (361475574163).

The spelling of 121433240042 in words is "one hundred twenty-one billion, four hundred thirty-three million, two hundred forty thousand, forty-two".