149428481 has 8 divisors (see below), whose sum is σ = 150386880. Its totient is φ = 148473648.

The previous prime is 149428471. The next prime is 149428501. The reversal of 149428481 is 184824941.

It is a happy number.

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 149428481 - 2¹⁴ = 149412097 is a prime.

It is a super-2 number, since 2×149428481² = 44657741867934722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149428471) 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, 162140 + ... + 163058.

It is an arithmetic number, because the mean of its divisors is an integer number (18798360).

Almost surely, 2^149428481 is an apocalyptic number.

It is an amenable number.

149428481 is a deficient number, since it is larger than the sum of its proper divisors (958399).

149428481 is an equidigital number, since it uses as much as digits as its factorization.

149428481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783.

The product of its digits is 73728, while the sum is 41.

The square root of 149428481 is about 12224.0942813773. The cubic root of 149428481 is about 530.6536151092.

The spelling of 149428481 in words is "one hundred forty-nine million, four hundred twenty-eight thousand, four hundred eighty-one".