121442240402 has 8 divisors (see below), whose sum is σ = 208186697856. Its totient is φ = 52046674452.

The previous prime is 121442240303. The next prime is 121442240459. The reversal of 121442240402 is 204042244121.

It is a happy number.

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

It is a super-2 number, since 2×121442240402² (a number of 23 digits) contains 22 as substring.

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, 4337222858 + ... + 4337222885.

It is an arithmetic number, because the mean of its divisors is an integer number (26023337232).

Almost surely, 2^121442240402 is an apocalyptic number.

121442240402 is a deficient number, since it is larger than the sum of its proper divisors (86744457454).

121442240402 is an equidigital number, since it uses as much as digits as its factorization.

121442240402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8674445752.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 121442240402 its reverse (204042244121), we get a palindrome (325484484523).

The spelling of 121442240402 in words is "one hundred twenty-one billion, four hundred forty-two million, two hundred forty thousand, four hundred two".