149048721 has 8 divisors (see below), whose sum is σ = 220812960. Its totient is φ = 99365796.

The previous prime is 149048687. The next prime is 149048759. The reversal of 149048721 is 127840941.

It is not a de Polignac number, because 149048721 - 2⁶ = 149048657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149048791) 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, 2760135 + ... + 2760188.

It is an arithmetic number, because the mean of its divisors is an integer number (27601620).

Almost surely, 2^149048721 is an apocalyptic number.

It is an amenable number.

149048721 is a deficient number, since it is larger than the sum of its proper divisors (71764239).

149048721 is an equidigital number, since it uses as much as digits as its factorization.

149048721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5520332 (or 5520326 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 149048721 is about 12208.5511425394. The cubic root of 149048721 is about 530.2036964743.

It can be divided in two parts, 149048 and 721, that added together give a square (149769 = 387²).

The spelling of 149048721 in words is "one hundred forty-nine million, forty-eight thousand, seven hundred twenty-one".