149421785 has 8 divisors (see below), whose sum is σ = 181576320. Its totient is φ = 118023984.

The previous prime is 149421781. The next prime is 149421793. The reversal of 149421785 is 587124941.

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

It is a cyclic number.

It is not a de Polignac number, because 149421785 - 2² = 149421781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149421781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188747 + ... + 189536.

It is an arithmetic number, because the mean of its divisors is an integer number (22697040).

Almost surely, 2^149421785 is an apocalyptic number.

It is an amenable number.

149421785 is a deficient number, since it is larger than the sum of its proper divisors (32154535).

149421785 is an equidigital number, since it uses as much as digits as its factorization.

149421785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378367.

The product of its digits is 80640, while the sum is 41.

The square root of 149421785 is about 12223.8203929868. The cubic root of 149421785 is about 530.6456886647.

The spelling of 149421785 in words is "one hundred forty-nine million, four hundred twenty-one thousand, seven hundred eighty-five".