402140000 has 60 divisors (see below), whose sum is σ = 989373924. Its totient is φ = 160848000.

The previous prime is 402139987. The next prime is 402140017. The reversal of 402140000 is 41204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9947 + ... + 30053.

Almost surely, 2^402140000 is an apocalyptic number.

402140000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494686962).

402140000 is an abundant number, since it is smaller than the sum of its proper divisors (587233924).

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

402140000 is an equidigital number, since it uses as much as digits as its factorization.

402140000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20137 (or 20114 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 402140000 is about 20053.4286345253. The cubic root of 402140000 is about 738.1179346538.

Adding to 402140000 its reverse (41204), we get a palindrome (402181204).

The spelling of 402140000 in words is "four hundred two million, one hundred forty thousand".