1391292 has 36 divisors (see below), whose sum is σ = 4020016. Its totient is φ = 397440.

The previous prime is 1391287. The next prime is 1391317. The reversal of 1391292 is 2921931.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2509 + ... + 3012.

2^1391292 is an apocalyptic number.

1391292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1391292 is an abundant number, since it is smaller than the sum of its proper divisors (2628724).

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

1391292 is a wasteful number, since it uses less digits than its factorization.

1391292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5538 (or 5533 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 1391292 is about 1179.5304150381. The cubic root of 1391292 is about 111.6364701401.

It can be divided in two parts, 139 and 1292, that added together give a triangular number (1431 = T₅₃).

The spelling of 1391292 in words is "one million, three hundred ninety-one thousand, two hundred ninety-two".