1290421320774 has 8 divisors (see below), whose sum is σ = 2580842641560. Its totient is φ = 430140440256.

The previous prime is 1290421320743. The next prime is 1290421320847. The reversal of 1290421320774 is 4770231240921.

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

1290421320774 is an admirable number.

It is a super-2 number, since 2×1290421320774² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 107535110059 + ... + 107535110070.

It is an arithmetic number, because the mean of its divisors is an integer number (322605330195).

Almost surely, 2^{1290421320774} is an apocalyptic number.

1290421320774 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1290421320774 is a wasteful number, since it uses less digits than its factorization.

1290421320774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215070220134.

The product of its (nonzero) digits is 169344, while the sum is 42.

The spelling of 1290421320774 in words is "one trillion, two hundred ninety billion, four hundred twenty-one million, three hundred twenty thousand, seven hundred seventy-four".