1372281 has 8 divisors (see below), whose sum is σ = 1860960. Its totient is φ = 899232.

The previous prime is 1372271. The next prime is 1372303. The reversal of 1372281 is 1822731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1372281 - 2¹⁹ = 847993 is a prime.

It is a super-2 number, since 2×1372281² = 3766310285922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1372211) 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, 3700 + ... + 4053.

It is an arithmetic number, because the mean of its divisors is an integer number (232620).

2^1372281 is an apocalyptic number.

It is an amenable number.

1372281 is a deficient number, since it is larger than the sum of its proper divisors (488679).

1372281 is an equidigital number, since it uses as much as digits as its factorization.

1372281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7815.

The product of its digits is 672, while the sum is 24.

The square root of 1372281 is about 1171.4439807349. The cubic root of 1372281 is about 111.1256591692.

It can be divided in two parts, 1372 and 281, that added together give a triangular number (1653 = T₅₇).

The spelling of 1372281 in words is "one million, three hundred seventy-two thousand, two hundred eighty-one".