140240402 has 8 divisors (see below), whose sum is σ = 210790512. Its totient is φ = 69976900.

The previous prime is 140240393. The next prime is 140240423. The reversal of 140240402 is 204042041.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70424 + ... + 72387.

It is an arithmetic number, because the mean of its divisors is an integer number (26348814).

Almost surely, 2^140240402 is an apocalyptic number.

140240402 is a deficient number, since it is larger than the sum of its proper divisors (70550110).

140240402 is a wasteful number, since it uses less digits than its factorization.

140240402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143304.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 140240402 is about 11842.3140475162. The cubic root of 140240402 is about 519.5464511725.

Adding to 140240402 its reverse (204042041), we get a palindrome (344282443).

The spelling of 140240402 in words is "one hundred forty million, two hundred forty thousand, four hundred two".