1372381 has 4 divisors (see below), whose sum is σ = 1375164. Its totient is φ = 1369600.

The previous prime is 1372379. The next prime is 1372391. The reversal of 1372381 is 1832731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1832731 = 719 ⋅2549.

It can be written as a sum of positive squares in 2 ways, for example, as 1276900 + 95481 = 1130^2 + 309^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372381 - 2¹ = 1372379 is a prime.

It is a super-2 number, since 2×1372381² = 3766859218322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430 + ... + 1711.

It is an arithmetic number, because the mean of its divisors is an integer number (343791).

2^1372381 is an apocalyptic number.

It is an amenable number.

1372381 is a deficient number, since it is larger than the sum of its proper divisors (2783).

1372381 is an equidigital number, since it uses as much as digits as its factorization.

1372381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782.

The product of its digits is 1008, while the sum is 25.

The square root of 1372381 is about 1171.4866623227. The cubic root of 1372381 is about 111.1283583967.

The spelling of 1372381 in words is "one million, three hundred seventy-two thousand, three hundred eighty-one".