144135938 has 32 divisors (see below), whose sum is σ = 236001600. Its totient is φ = 65797056.

The previous prime is 144135931. The next prime is 144135949. The reversal of 144135938 is 839531441.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (144135931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118220 + ... + 119432.

It is an arithmetic number, because the mean of its divisors is an integer number (7375050).

Almost surely, 2^144135938 is an apocalyptic number.

144135938 is a deficient number, since it is larger than the sum of its proper divisors (91865662).

144135938 is a wasteful number, since it uses less digits than its factorization.

144135938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346.

The product of its digits is 51840, while the sum is 38.

The square root of 144135938 is about 12005.6627472206. The cubic root of 144135938 is about 524.3131613872.

The spelling of 144135938 in words is "one hundred forty-four million, one hundred thirty-five thousand, nine hundred thirty-eight".