1377256542 has 8 divisors (see below), whose sum is σ = 2754513096. Its totient is φ = 459085512.

The previous prime is 1377256511. The next prime is 1377256613. The reversal of 1377256542 is 2456527731.

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

1377256542 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1377256494 and 1377256503.

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, 114771373 + ... + 114771384.

It is an arithmetic number, because the mean of its divisors is an integer number (344314137).

Almost surely, 2^1377256542 is an apocalyptic number.

1377256542 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.

1377256542 is a wasteful number, since it uses less digits than its factorization.

1377256542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229542762.

The product of its digits is 352800, while the sum is 42.

The square root of 1377256542 is about 37111.4071681471. The cubic root of 1377256542 is about 1112.5980163946.

The spelling of 1377256542 in words is "one billion, three hundred seventy-seven million, two hundred fifty-six thousand, five hundred forty-two".