149721103 has 8 divisors (see below), whose sum is σ = 176629760. Its totient is φ = 124192440.

The previous prime is 149721097. The next prime is 149721139. The reversal of 149721103 is 301127941.

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 149721103 - 2⁵ = 149721071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149721163) 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, 344763 + ... + 345196.

It is an arithmetic number, because the mean of its divisors is an integer number (22078720).

Almost surely, 2^149721103 is an apocalyptic number.

149721103 is a deficient number, since it is larger than the sum of its proper divisors (26908657).

149721103 is an equidigital number, since it uses as much as digits as its factorization.

149721103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689997.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 149721103 is about 12236.0574941441. The cubic root of 149721103 is about 530.9997777469. Note that the first 3 decimals are identical.

The spelling of 149721103 in words is "one hundred forty-nine million, seven hundred twenty-one thousand, one hundred three".