1402039 has 4 divisors (see below), whose sum is σ = 1404760. Its totient is φ = 1399320.

The previous prime is 1402031. The next prime is 1402061. The reversal of 1402039 is 9302041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9302041 = 7 ⋅1328863.

It is a cyclic number.

It is not a de Polignac number, because 1402039 - 2³ = 1402031 is a prime.

It is a Duffinian number.

It is a congruent 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, 324 + ... + 1705.

It is an arithmetic number, because the mean of its divisors is an integer number (351190).

2^1402039 is an apocalyptic number.

1402039 is a deficient number, since it is larger than the sum of its proper divisors (2721).

1402039 is an equidigital number, since it uses as much as digits as its factorization.

1402039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1402039 is about 1184.0772778835. The cubic root of 1402039 is about 111.9231775480.

The spelling of 1402039 in words is "one million, four hundred two thousand, thirty-nine".