140644534 has 8 divisors (see below), whose sum is σ = 211729248. Its totient is φ = 70068120.

The previous prime is 140644531. The next prime is 140644541. The reversal of 140644534 is 435446041.

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

It is a junction number, because it is equal to n+sod(n) for n = 140644496 and 140644505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140644531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126382 + ... + 127489.

It is an arithmetic number, because the mean of its divisors is an integer number (26466156).

Almost surely, 2^140644534 is an apocalyptic number.

140644534 is a deficient number, since it is larger than the sum of its proper divisors (71084714).

140644534 is a wasteful number, since it uses less digits than its factorization.

140644534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254150.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 140644534 is about 11859.3648227888. The cubic root of 140644534 is about 520.0450330822.

The spelling of 140644534 in words is "one hundred forty million, six hundred forty-four thousand, five hundred thirty-four".