121504352142 has 16 divisors (see below), whose sum is σ = 243012908880. Its totient is φ = 40500749952.

The previous prime is 121504352063. The next prime is 121504352171. The reversal of 121504352142 is 241253405121.

It is a congruent number.

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, 299368 + ... + 576740.

It is an arithmetic number, because the mean of its divisors is an integer number (15188306805).

Almost surely, 2^121504352142 is an apocalyptic number.

121504352142 is an abundant number, since it is smaller than the sum of its proper divisors (121508556738).

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

121504352142 is a wasteful number, since it uses less digits than its factorization.

121504352142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350387.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 121504352142 its reverse (241253405121), we get a palindrome (362757757263).

The spelling of 121504352142 in words is "one hundred twenty-one billion, five hundred four million, three hundred fifty-two thousand, one hundred forty-two".