140402542 has 12 divisors (see below), whose sum is σ = 244988280. Its totient is φ = 60172476.

The previous prime is 140402527. The next prime is 140402567. The reversal of 140402542 is 245204041.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 716242 + ... + 716437.

It is an arithmetic number, because the mean of its divisors is an integer number (20415690).

Almost surely, 2^140402542 is an apocalyptic number.

140402542 is a deficient number, since it is larger than the sum of its proper divisors (104585738).

140402542 is a wasteful number, since it uses less digits than its factorization.

140402542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432695 (or 1432688 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 140402542 is about 11849.1578603713. The cubic root of 140402542 is about 519.7465999090.

Adding to 140402542 its reverse (245204041), we get a palindrome (385606583).

The spelling of 140402542 in words is "one hundred forty million, four hundred two thousand, five hundred forty-two".