140390742 has 16 divisors (see below), whose sum is σ = 284336640. Its totient is φ = 46204392.

The previous prime is 140390717. The next prime is 140390771. The reversal of 140390742 is 247093041.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147618 + ... + 148565.

It is an arithmetic number, because the mean of its divisors is an integer number (17771040).

Almost surely, 2^140390742 is an apocalyptic number.

140390742 is an abundant number, since it is smaller than the sum of its proper divisors (143945898).

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

140390742 is a wasteful number, since it uses less digits than its factorization.

140390742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296267.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 140390742 is about 11848.6599242277. The cubic root of 140390742 is about 519.7320389625.

The spelling of 140390742 in words is "one hundred forty million, three hundred ninety thousand, seven hundred forty-two".