149242661 has 8 divisors (see below), whose sum is σ = 152055000. Its totient is φ = 146442240.

The previous prime is 149242657. The next prime is 149242679. The reversal of 149242661 is 166242941.

It can be written as a sum of positive squares in 4 ways, for example, as 1012036 + 148230625 = 1006^2 + 12175^2 .

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 149242661 - 2² = 149242657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149242601) 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, 24665 + ... + 30113.

It is an arithmetic number, because the mean of its divisors is an integer number (19006875).

Almost surely, 2^149242661 is an apocalyptic number.

It is an amenable number.

149242661 is a deficient number, since it is larger than the sum of its proper divisors (2812339).

149242661 is an equidigital number, since it uses as much as digits as its factorization.

149242661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959.

The product of its digits is 20736, while the sum is 35.

The square root of 149242661 is about 12216.4913539035. The cubic root of 149242661 is about 530.4335612172.

The spelling of 149242661 in words is "one hundred forty-nine million, two hundred forty-two thousand, six hundred sixty-one".