121422040442 has 8 divisors (see below), whose sum is σ = 183462499476. Its totient is φ = 60267873952.

The previous prime is 121422040351. The next prime is 121422040447. The reversal of 121422040442 is 244040224121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 119846823721 + 1575216721 = 346189^2 + 39689^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121422040447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221572793 + ... + 221573340.

Almost surely, 2^121422040442 is an apocalyptic number.

121422040442 is a deficient number, since it is larger than the sum of its proper divisors (62040459034).

121422040442 is a wasteful number, since it uses less digits than its factorization.

121422040442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443146272.

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

Adding to 121422040442 its reverse (244040224121), we get a palindrome (365462264563).

The spelling of 121422040442 in words is "one hundred twenty-one billion, four hundred twenty-two million, forty thousand, four hundred forty-two".