1377722442 has 16 divisors (see below), whose sum is σ = 2779830720. Its totient is φ = 455176512.

The previous prime is 1377722399. The next prime is 1377722443. The reversal of 1377722442 is 2442277731.

It is a self number, because there is not a number n which added to its sum of digits gives 1377722442.

It is not an unprimeable number, because it can be changed into a prime (1377722443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015342 + ... + 1016697.

It is an arithmetic number, because the mean of its divisors is an integer number (173739420).

Almost surely, 2^1377722442 is an apocalyptic number.

1377722442 is an abundant number, since it is smaller than the sum of its proper divisors (1402108278).

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

1377722442 is a wasteful number, since it uses less digits than its factorization.

1377722442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032157.

The product of its digits is 131712, while the sum is 39.

The square root of 1377722442 is about 37117.6836831179. The cubic root of 1377722442 is about 1112.7234592492.

The spelling of 1377722442 in words is "one billion, three hundred seventy-seven million, seven hundred twenty-two thousand, four hundred forty-two".