1402091 has 4 divisors (see below), whose sum is σ = 1406832. Its totient is φ = 1397352.

The previous prime is 1402087. The next prime is 1402123. The reversal of 1402091 is 1902041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1902041 = 61 ⋅31181.

It is a cyclic number.

It is not a de Polignac number, because 1402091 - 2² = 1402087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1402031) 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, 1895 + ... + 2528.

It is an arithmetic number, because the mean of its divisors is an integer number (351708).

2^1402091 is an apocalyptic number.

1402091 is a deficient number, since it is larger than the sum of its proper divisors (4741).

1402091 is an equidigital number, since it uses as much as digits as its factorization.

1402091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4740.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1402091 is about 1184.0992357062. The cubic root of 1402091 is about 111.9245612312.

The spelling of 1402091 in words is "one million, four hundred two thousand, ninety-one".