780140541 has 4 divisors (see below), whose sum is σ = 1040187392. Its totient is φ = 520093692.

The previous prime is 780140521. The next prime is 780140567. The reversal of 780140541 is 145041087.

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 780140541 - 2¹⁵ = 780107773 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 780140499 and 780140508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780140521) 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, 130023421 + ... + 130023426.

It is an arithmetic number, because the mean of its divisors is an integer number (260046848).

Almost surely, 2^780140541 is an apocalyptic number.

It is an amenable number.

780140541 is a deficient number, since it is larger than the sum of its proper divisors (260046851).

780140541 is a wasteful number, since it uses less digits than its factorization.

780140541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260046850.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 780140541 is about 27930.9960617233. The cubic root of 780140541 is about 920.5716913829.

The spelling of 780140541 in words is "seven hundred eighty million, one hundred forty thousand, five hundred forty-one".