144905642 has 24 divisors (see below), whose sum is σ = 253282464. Its totient is φ = 61995192.

The previous prime is 144905641. The next prime is 144905659. The reversal of 144905642 is 246509441.

It is not an unprimeable number, because it can be changed into a prime (144905641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86093 + ... + 87759.

It is an arithmetic number, because the mean of its divisors is an integer number (10553436).

Almost surely, 2^144905642 is an apocalyptic number.

144905642 is a deficient number, since it is larger than the sum of its proper divisors (108376822).

144905642 is a wasteful number, since it uses less digits than its factorization.

144905642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2570 (or 2563 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 144905642 is about 12037.6759384858. The cubic root of 144905642 is about 525.2448043500.

The spelling of 144905642 in words is "one hundred forty-four million, nine hundred five thousand, six hundred forty-two".