140257634 has 48 divisors (see below), whose sum is σ = 244532736. Its totient is φ = 60170880.

The previous prime is 140257631. The next prime is 140257651. The reversal of 140257634 is 436752041.

It is a self number, because there is not a number n which added to its sum of digits gives 140257634.

It is not an unprimeable number, because it can be changed into a prime (140257631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 628847 + ... + 629069.

It is an arithmetic number, because the mean of its divisors is an integer number (5094432).

Almost surely, 2^140257634 is an apocalyptic number.

140257634 is a deficient number, since it is larger than the sum of its proper divisors (104275102).

140257634 is a wasteful number, since it uses less digits than its factorization.

140257634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 140257634 is about 11843.0415856738. The cubic root of 140257634 is about 519.5677300090.

The spelling of 140257634 in words is "one hundred forty million, two hundred fifty-seven thousand, six hundred thirty-four".