140420432442409 has 4 divisors (see below), whose sum is σ = 160480494219904. Its totient is φ = 120360370664916.

The previous prime is 140420432442397. The next prime is 140420432442467. The reversal of 140420432442409 is 904244234024041.

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 140420432442409 - 2⁵ = 140420432442377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140420432442809) 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, 10030030888737 + ... + 10030030888750.

It is an arithmetic number, because the mean of its divisors is an integer number (40120123554976).

Almost surely, 2^{140420432442409} is an apocalyptic number.

It is an amenable number.

140420432442409 is a deficient number, since it is larger than the sum of its proper divisors (20060061777495).

140420432442409 is an equidigital number, since it uses as much as digits as its factorization.

140420432442409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20060061777494.

The product of its (nonzero) digits is 884736, while the sum is 43.

The spelling of 140420432442409 in words is "one hundred forty trillion, four hundred twenty billion, four hundred thirty-two million, four hundred forty-two thousand, four hundred nine".