149071423 has 2 divisors, whose sum is σ = 149071424. Its totient is φ = 149071422.

The previous prime is 149071421. The next prime is 149071471. The reversal of 149071423 is 324170941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149071423 - 2¹ = 149071421 is a prime.

Together with 149071421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149071421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74535711 + 74535712.

It is an arithmetic number, because the mean of its divisors is an integer number (74535712).

Almost surely, 2^149071423 is an apocalyptic number.

149071423 is a deficient number, since it is larger than the sum of its proper divisors (1).

149071423 is an equidigital number, since it uses as much as digits as its factorization.

149071423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 149071423 is about 12209.4808652948. The cubic root of 149071423 is about 530.2306140110.

The spelling of 149071423 in words is "one hundred forty-nine million, seventy-one thousand, four hundred twenty-three".