1371540 has 24 divisors (see below), whose sum is σ = 3840480. Its totient is φ = 365728.

The previous prime is 1371511. The next prime is 1371541. The reversal of 1371540 is 451731.

It is a super-2 number, since 2×1371540² = 3762243943200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11370 + ... + 11489.

It is an arithmetic number, because the mean of its divisors is an integer number (160020).

2^1371540 is an apocalyptic number.

1371540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1371540 is an abundant number, since it is smaller than the sum of its proper divisors (2468940).

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

1371540 is a wasteful number, since it uses less digits than its factorization.

1371540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22871 (or 22869 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 1371540 is about 1171.1276617005. The cubic root of 1371540 is about 111.1056538060.

The spelling of 1371540 in words is "one million, three hundred seventy-one thousand, five hundred forty".