144042261 has 32 divisors (see below), whose sum is σ = 220907520. Its totient is φ = 82632000.

The previous prime is 144042253. The next prime is 144042277. The reversal of 144042261 is 162240441.

It is a happy number.

It is not a de Polignac number, because 144042261 - 2³ = 144042253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144042281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75720 + ... + 77598.

It is an arithmetic number, because the mean of its divisors is an integer number (6903360).

Almost surely, 2^144042261 is an apocalyptic number.

144042261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

144042261 is a deficient number, since it is larger than the sum of its proper divisors (76865259).

144042261 is a wasteful number, since it uses less digits than its factorization.

144042261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 144042261 is about 12001.7607458239. The cubic root of 144042261 is about 524.1995493599.

The spelling of 144042261 in words is "one hundred forty-four million, forty-two thousand, two hundred sixty-one".