1402690 has 8 divisors (see below), whose sum is σ = 2524860. Its totient is φ = 561072.

The previous prime is 1402673. The next prime is 1402693. The reversal of 1402690 is 962041.

It can be written as a sum of positive squares in 2 ways, for example, as 1225449 + 177241 = 1107^2 + 421^2 .

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

It is a super-2 number, since 2×1402690² = 3935078472200, which contains 22 as substring.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1402693) 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, 70125 + ... + 70144.

2^1402690 is an apocalyptic number.

1402690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1402690 is a deficient number, since it is larger than the sum of its proper divisors (1122170).

1402690 is a wasteful number, since it uses less digits than its factorization.

1402690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140276.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1402690 is about 1184.3521435789. The cubic root of 1402690 is about 111.9404977305.

The spelling of 1402690 in words is "one million, four hundred two thousand, six hundred ninety".