1400140402 has 8 divisors (see below), whose sum is σ = 2101112496. Its totient is φ = 699769572.

The previous prime is 1400140397. The next prime is 1400140409. The reversal of 1400140402 is 2040410041.

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

It is not an unprimeable number, because it can be changed into a prime (1400140409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144448 + ... + 153835.

It is an arithmetic number, because the mean of its divisors is an integer number (262639062).

Almost surely, 2^1400140402 is an apocalyptic number.

1400140402 is a deficient number, since it is larger than the sum of its proper divisors (700972094).

1400140402 is a wasteful number, since it uses less digits than its factorization.

1400140402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300632.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1400140402 is about 37418.4500213464. The cubic root of 1400140402 is about 1118.7263375372.

Adding to 1400140402 its reverse (2040410041), we get a palindrome (3440550443).

The spelling of 1400140402 in words is "one billion, four hundred million, one hundred forty thousand, four hundred two".