121451626642 has 8 divisors (see below), whose sum is σ = 182474631756. Its totient is φ = 60626749392.

The previous prime is 121451626631. The next prime is 121451626651. The reversal of 121451626642 is 246626154121.

It can be written as a sum of positive squares in 2 ways, for example, as 120964144401 + 487482241 = 347799^2 + 22079^2 .

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

It is a super-2 number, since 2×121451626642² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121451626595 and 121451626604.

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, 49530433 + ... + 49532884.

Almost surely, 2^121451626642 is an apocalyptic number.

121451626642 is a deficient number, since it is larger than the sum of its proper divisors (61023005114).

121451626642 is an equidigital number, since it uses as much as digits as its factorization.

121451626642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99063932.

The product of its digits is 138240, while the sum is 40.

The spelling of 121451626642 in words is "one hundred twenty-one billion, four hundred fifty-one million, six hundred twenty-six thousand, six hundred forty-two".