1372090 has 8 divisors (see below), whose sum is σ = 2469780. Its totient is φ = 548832.

The previous prime is 1372081. The next prime is 1372097. The reversal of 1372090 is 902731.

It can be written as a sum of positive squares in 2 ways, for example, as 1361889 + 10201 = 1167^2 + 101^2 .

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1372097) 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, 68595 + ... + 68614.

2^1372090 is an apocalyptic number.

1372090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1372090 is a deficient number, since it is larger than the sum of its proper divisors (1097690).

1372090 is a wasteful number, since it uses less digits than its factorization.

1372090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137216.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 1372090 is about 1171.3624545801. The cubic root of 1372090 is about 111.1205032801.

The spelling of 1372090 in words is "one million, three hundred seventy-two thousand, ninety".