149049023 has 4 divisors (see below), whose sum is σ = 153857088. Its totient is φ = 144240960.

The previous prime is 149049011. The next prime is 149049029. The reversal of 149049023 is 320940941.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149049023 - 2¹⁶ = 148983487 is a prime.

It is a super-2 number, since 2×149049023² = 44431222514509058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149049029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2403986 + ... + 2404047.

It is an arithmetic number, because the mean of its divisors is an integer number (38464272).

Almost surely, 2^149049023 is an apocalyptic number.

149049023 is a deficient number, since it is larger than the sum of its proper divisors (4808065).

149049023 is an equidigital number, since it uses as much as digits as its factorization.

149049023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808064.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 149049023 is about 12208.5635109131. The cubic root of 149049023 is about 530.2040545706.

Adding to 149049023 its reverse (320940941), we get a palindrome (469989964).

The spelling of 149049023 in words is "one hundred forty-nine million, forty-nine thousand, twenty-three".