1387647240120 has 96 divisors (see below), whose sum is σ = 4510012450320. Its totient is φ = 370026224640.

The previous prime is 1387647240113. The next prime is 1387647240127. The reversal of 1387647240120 is 210427467831.

1387647240120 is a `hidden beast` number, since 1 + 387 + 6 + 4 + 7 + 240 + 1 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (1387647240113) and next prime (1387647240127).

It is a super-2 number, since 2×1387647240120² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387647240127) 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, 14491600 + ... + 14587040.

Almost surely, 2^{1387647240120} is an apocalyptic number.

1387647240120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1387647240120 is an abundant number, since it is smaller than the sum of its proper divisors (3122365210200).

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

1387647240120 is a wasteful number, since it uses less digits than its factorization.

1387647240120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135845 (or 135838 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 1387647240120 in words is "one trillion, three hundred eighty-seven billion, six hundred forty-seven million, two hundred forty thousand, one hundred twenty".