1381456120 has 32 divisors (see below), whose sum is σ = 3390847920. Its totient is φ = 502347520.

The previous prime is 1381456003. The next prime is 1381456127. The reversal of 1381456120 is 216541831.

It is a super-2 number, since 2×1381456120² = 3816842022970908800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381456127) 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, 1569397 + ... + 1570276.

Almost surely, 2^1381456120 is an apocalyptic number.

1381456120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1381456120 is an abundant number, since it is smaller than the sum of its proper divisors (2009391800).

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

1381456120 is a wasteful number, since it uses less digits than its factorization.

1381456120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139695 (or 3139691 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1381456120 is about 37167.9447911772. The cubic root of 1381456120 is about 1113.7277262961.

Adding to 1381456120 its reverse (216541831), we get a palindrome (1597997951).

The spelling of 1381456120 in words is "one billion, three hundred eighty-one million, four hundred fifty-six thousand, one hundred twenty".