1402072240 has 20 divisors (see below), whose sum is σ = 3259818144. Its totient is φ = 560828864.

The previous prime is 1402072223. The next prime is 1402072267. The reversal of 1402072240 is 422702041.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8762872 + ... + 8763031.

Almost surely, 2^1402072240 is an apocalyptic number.

1402072240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1402072240 is an abundant number, since it is smaller than the sum of its proper divisors (1857745904).

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

1402072240 is a wasteful number, since it uses less digits than its factorization.

1402072240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17525916 (or 17525910 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 1402072240 is about 37444.2551000818. The cubic root of 1402072240 is about 1119.2406204479.

Adding to 1402072240 its reverse (422702041), we get a palindrome (1824774281).

The spelling of 1402072240 in words is "one billion, four hundred two million, seventy-two thousand, two hundred forty".