140534157 has 4 divisors (see below), whose sum is σ = 187378880. Its totient is φ = 93689436.

The previous prime is 140534131. The next prime is 140534159. The reversal of 140534157 is 751435041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 140534157 - 2¹¹ = 140532109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140534159) 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, 23422357 + ... + 23422362.

It is an arithmetic number, because the mean of its divisors is an integer number (46844720).

Almost surely, 2^140534157 is an apocalyptic number.

It is an amenable number.

140534157 is a deficient number, since it is larger than the sum of its proper divisors (46844723).

140534157 is an equidigital number, since it uses as much as digits as its factorization.

140534157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46844722.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 140534157 is about 11854.7103296538. The cubic root of 140534157 is about 519.9089547208.

Adding to 140534157 its reverse (751435041), we get a palindrome (891969198).

The spelling of 140534157 in words is "one hundred forty million, five hundred thirty-four thousand, one hundred fifty-seven".