1377520542 has 48 divisors (see below), whose sum is σ = 3076006752. Its totient is φ = 445251840.

The previous prime is 1377520541. The next prime is 1377520549. The reversal of 1377520542 is 2450257731.

1377520542 is a `hidden beast` number, since 13 + 77 + 520 + 54 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1377520497 and 1377520506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377520541) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117658 + ... + 128834.

It is an arithmetic number, because the mean of its divisors is an integer number (64083474).

Almost surely, 2^1377520542 is an apocalyptic number.

1377520542 is an abundant number, since it is smaller than the sum of its proper divisors (1698486210).

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

1377520542 is a wasteful number, since it uses less digits than its factorization.

1377520542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11393 (or 11390 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 1377520542 is about 37114.9638555664. The cubic root of 1377520542 is about 1112.6691014591.

The spelling of 1377520542 in words is "one billion, three hundred seventy-seven million, five hundred twenty thousand, five hundred forty-two".