121242442925 has 6 divisors (see below), whose sum is σ = 150340629258. Its totient is φ = 96993954320.

The previous prime is 121242442907. The next prime is 121242442943. The reversal of 121242442925 is 529244242121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121242442907) and next prime (121242442943).

It can be written as a sum of positive squares in 3 ways, for example, as 406949929 + 120835492996 = 20173^2 + 347614^2 .

It is not a de Polignac number, because 121242442925 - 2¹⁸ = 121242180781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2424848834 + ... + 2424848883.

It is an arithmetic number, because the mean of its divisors is an integer number (25056771543).

Almost surely, 2^121242442925 is an apocalyptic number.

It is an amenable number.

121242442925 is a deficient number, since it is larger than the sum of its proper divisors (29098186333).

121242442925 is an equidigital number, since it uses as much as digits as its factorization.

121242442925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4849697727 (or 4849697722 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The spelling of 121242442925 in words is "one hundred twenty-one billion, two hundred forty-two million, four hundred forty-two thousand, nine hundred twenty-five".