140681534 has 16 divisors (see below), whose sum is σ = 248948736. Its totient is φ = 58347000.

The previous prime is 140681533. The next prime is 140681591. The reversal of 140681534 is 435186041.

It is a self number, because there is not a number n which added to its sum of digits gives 140681534.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140681533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161642 + ... + 162509.

It is an arithmetic number, because the mean of its divisors is an integer number (15559296).

Almost surely, 2^140681534 is an apocalyptic number.

140681534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140681534 is a deficient number, since it is larger than the sum of its proper divisors (108267202).

140681534 is a wasteful number, since it uses less digits than its factorization.

140681534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324191.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 140681534 is about 11860.9246688443. The cubic root of 140681534 is about 520.0906326245.

The spelling of 140681534 in words is "one hundred forty million, six hundred eighty-one thousand, five hundred thirty-four".