1390142 has 16 divisors (see below), whose sum is σ = 2268672. Its totient is φ = 635040.

The previous prime is 1390121. The next prime is 1390157. The reversal of 1390142 is 2410931.

It is a super-4 number, since 4×1390142⁴ (a number of 26 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3092 + ... + 3512.

It is an arithmetic number, because the mean of its divisors is an integer number (141792).

2^1390142 is an apocalyptic number.

1390142 is a deficient number, since it is larger than the sum of its proper divisors (878530).

1390142 is a wasteful number, since it uses less digits than its factorization.

1390142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1390142 is about 1179.0428321312. The cubic root of 1390142 is about 111.6057032153.

The spelling of 1390142 in words is "one million, three hundred ninety thousand, one hundred forty-two".