345742087 has 2 divisors, whose sum is σ = 345742088. Its totient is φ = 345742086.

The previous prime is 345742079. The next prime is 345742091. The reversal of 345742087 is 780247543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345742087 - 2³ = 345742079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345742687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172871043 + 172871044.

It is an arithmetic number, because the mean of its divisors is an integer number (172871044).

Almost surely, 2^345742087 is an apocalyptic number.

345742087 is a deficient number, since it is larger than the sum of its proper divisors (1).

345742087 is an equidigital number, since it uses as much as digits as its factorization.

345742087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 40.

The square root of 345742087 is about 18594.1412009267. The cubic root of 345742087 is about 701.8604164268.

The spelling of 345742087 in words is "three hundred forty-five million, seven hundred forty-two thousand, eighty-seven".