140153641 has 4 divisors (see below), whose sum is σ = 143413072. Its totient is φ = 136894212.

The previous prime is 140153639. The next prime is 140153653. The reversal of 140153641 is 146351041.

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 a cyclic number.

It is not a de Polignac number, because 140153641 - 2¹ = 140153639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140153441) 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, 1629651 + ... + 1629736.

It is an arithmetic number, because the mean of its divisors is an integer number (35853268).

Almost surely, 2^140153641 is an apocalyptic number.

It is an amenable number.

140153641 is a deficient number, since it is larger than the sum of its proper divisors (3259431).

140153641 is an equidigital number, since it uses as much as digits as its factorization.

140153641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259430.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 140153641 is about 11838.6503031384. The cubic root of 140153641 is about 519.4392883581.

The spelling of 140153641 in words is "one hundred forty million, one hundred fifty-three thousand, six hundred forty-one".