1402540 has 24 divisors (see below), whose sum is σ = 3074400. Its totient is φ = 536448.

The previous prime is 1402529. The next prime is 1402543. The reversal of 1402540 is 452041.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1402543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1065 + ... + 1984.

It is an arithmetic number, because the mean of its divisors is an integer number (128100).

2^1402540 is an apocalyptic number.

1402540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402540 is an abundant number, since it is smaller than the sum of its proper divisors (1671860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1402540 is a wasteful number, since it uses less digits than its factorization.

1402540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3081 (or 3079 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 1402540 is about 1184.2888161255. The cubic root of 1402540 is about 111.9365073803.

Adding to 1402540 its reverse (452041), we get a palindrome (1854581).

The spelling of 1402540 in words is "one million, four hundred two thousand, five hundred forty".