1402066138 has 8 divisors (see below), whose sum is σ = 2294290080. Its totient is φ = 637302780.

The previous prime is 1402066117. The next prime is 1402066153. The reversal of 1402066138 is 8316602041.

It is a happy number.

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

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, 31865118 + ... + 31865161.

It is an arithmetic number, because the mean of its divisors is an integer number (286786260).

Almost surely, 2^1402066138 is an apocalyptic number.

1402066138 is a deficient number, since it is larger than the sum of its proper divisors (892223942).

1402066138 is a wasteful number, since it uses less digits than its factorization.

1402066138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63730292.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1402066138 is about 37444.1736188689. The cubic root of 1402066138 is about 1119.2389967521.

Adding to 1402066138 its reverse (8316602041), we get a palindrome (9718668179).

The spelling of 1402066138 in words is "one billion, four hundred two million, sixty-six thousand, one hundred thirty-eight".