1402490 has 8 divisors (see below), whose sum is σ = 2524500. Its totient is φ = 560992.

The previous prime is 1402477. The next prime is 1402493. The reversal of 1402490 is 942041.

It can be written as a sum of positive squares in 2 ways, for example, as 1385329 + 17161 = 1177^2 + 131^2 .

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

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1402493) 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, 70115 + ... + 70134.

2^1402490 is an apocalyptic number.

1402490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1402490 is a deficient number, since it is larger than the sum of its proper divisors (1122010).

1402490 is a wasteful number, since it uses less digits than its factorization.

1402490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140256.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1402490 is about 1184.2677062219. The cubic root of 1402490 is about 111.9351772003.

The spelling of 1402490 in words is "one million, four hundred two thousand, four hundred ninety".