140157841 has 4 divisors (see below), whose sum is σ = 144990900. Its totient is φ = 135324784.

The previous prime is 140157839. The next prime is 140157869. The reversal of 140157841 is 148751041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 148751041 = 8269 ⋅17989.

It can be written as a sum of positive squares in 2 ways, for example, as 41731600 + 98426241 = 6460^2 + 9921^2 .

It is a cyclic number.

It is not a de Polignac number, because 140157841 - 2¹ = 140157839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140157821) 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, 2416486 + ... + 2416543.

It is an arithmetic number, because the mean of its divisors is an integer number (36247725).

Almost surely, 2^140157841 is an apocalyptic number.

It is an amenable number.

140157841 is a deficient number, since it is larger than the sum of its proper divisors (4833059).

140157841 is an equidigital number, since it uses as much as digits as its factorization.

140157841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4833058.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 140157841 is about 11838.8276868954. The cubic root of 140157841 is about 519.4444770049. Note that the first 4 decimals are identical.

The spelling of 140157841 in words is "one hundred forty million, one hundred fifty-seven thousand, eight hundred forty-one".