140436534 has 32 divisors (see below), whose sum is σ = 329677056. Its totient is φ = 39039840.

The previous prime is 140436529. The next prime is 140436547. The reversal of 140436534 is 435634041.

140436534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43632 + ... + 46739.

It is an arithmetic number, because the mean of its divisors is an integer number (10302408).

Almost surely, 2^140436534 is an apocalyptic number.

140436534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

140436534 is an abundant number, since it is smaller than the sum of its proper divisors (189240522).

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

140436534 is a wasteful number, since it uses less digits than its factorization.

140436534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90420.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 140436534 is about 11850.5921371044. The cubic root of 140436534 is about 519.7885407471.

The spelling of 140436534 in words is "one hundred forty million, four hundred thirty-six thousand, five hundred thirty-four".