1402149840 has 640 divisors, whose sum is σ = 5866291200. Its totient is φ = 268738560.

The previous prime is 1402149829. The next prime is 1402149929. The reversal of 1402149840 is 489412041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12863706 + ... + 12863814.

It is an arithmetic number, because the mean of its divisors is an integer number (9166080).

Almost surely, 2^1402149840 is an apocalyptic number.

1402149840 is a gapful number since it is divisible by the number (10) 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 1402149840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2933145600).

1402149840 is an abundant number, since it is smaller than the sum of its proper divisors (4464141360).

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

1402149840 is a wasteful number, since it uses less digits than its factorization.

1402149840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1402149840 is about 37445.2912927647. The cubic root of 1402149840 is about 1119.2612688061.

The spelling of 1402149840 in words is "one billion, four hundred two million, one hundred forty-nine thousand, eight hundred forty".