121235642 has 8 divisors (see below), whose sum is σ = 198385632. Its totient is φ = 55107100.

The previous prime is 121235633. The next prime is 121235669. The reversal of 121235642 is 246532121.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2755334 + ... + 2755377.

It is an arithmetic number, because the mean of its divisors is an integer number (24798204).

Almost surely, 2^121235642 is an apocalyptic number.

121235642 is a deficient number, since it is larger than the sum of its proper divisors (77149990).

121235642 is a wasteful number, since it uses less digits than its factorization.

121235642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510724.

The product of its digits is 2880, while the sum is 26.

The square root of 121235642 is about 11010.7057902752. The cubic root of 121235642 is about 494.9296121389.

Adding to 121235642 its reverse (246532121), we get a palindrome (367767763).

The spelling of 121235642 in words is "one hundred twenty-one million, two hundred thirty-five thousand, six hundred forty-two".