149542791 has 8 divisors (see below), whose sum is σ = 205822464. Its totient is φ = 96479160.

The previous prime is 149542759. The next prime is 149542793. The reversal of 149542791 is 197245941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149542791 - 2⁵ = 149542759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149542793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803901 + ... + 804086.

It is an arithmetic number, because the mean of its divisors is an integer number (25727808).

Almost surely, 2^149542791 is an apocalyptic number.

149542791 is a deficient number, since it is larger than the sum of its proper divisors (56279673).

149542791 is a wasteful number, since it uses less digits than its factorization.

149542791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608021.

The product of its digits is 90720, while the sum is 42.

The square root of 149542791 is about 12228.7689895590. The cubic root of 149542791 is about 530.7888939915.

The spelling of 149542791 in words is "one hundred forty-nine million, five hundred forty-two thousand, seven hundred ninety-one".