461742139 has 2 divisors, whose sum is σ = 461742140. Its totient is φ = 461742138.

The previous prime is 461742137. The next prime is 461742157. The reversal of 461742139 is 931247164.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 461742139 - 2¹ = 461742137 is a prime.

Together with 461742137, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 461742098 and 461742107.

It is not a weakly prime, because it can be changed into another prime (461742133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230871069 + 230871070.

It is an arithmetic number, because the mean of its divisors is an integer number (230871070).

Almost surely, 2^461742139 is an apocalyptic number.

461742139 is a deficient number, since it is larger than the sum of its proper divisors (1).

461742139 is an equidigital number, since it uses as much as digits as its factorization.

461742139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 461742139 is about 21488.1860332602. The cubic root of 461742139 is about 772.9175528089.

The spelling of 461742139 in words is "four hundred sixty-one million, seven hundred forty-two thousand, one hundred thirty-nine".