144057121 has 6 divisors (see below), whose sum is σ = 155991030. Its totient is φ = 132975648.

The previous prime is 144057113. The next prime is 144057131. The reversal of 144057121 is 121750441.

It can be written as a sum of positive squares in 3 ways, for example, as 57121 + 144000000 = 239^2 + 12000^2 .

It is not a de Polignac number, because 144057121 - 2³ = 144057113 is a prime.

It is a super-2 number, since 2×144057121² = 41504908221617282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144057101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 426036 + ... + 426373.

It is an arithmetic number, because the mean of its divisors is an integer number (25998505).

Almost surely, 2^144057121 is an apocalyptic number.

It is an amenable number.

144057121 is a deficient number, since it is larger than the sum of its proper divisors (11933909).

144057121 is an equidigital number, since it uses as much as digits as its factorization.

144057121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852435 (or 852422 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 144057121 is about 12002.3798056885. The cubic root of 144057121 is about 524.2175749435.

The spelling of 144057121 in words is "one hundred forty-four million, fifty-seven thousand, one hundred twenty-one".