144669742 has 16 divisors (see below), whose sum is σ = 251500032. Its totient is φ = 61127640.

The previous prime is 144669739. The next prime is 144669757. The reversal of 144669742 is 247966441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71778 + ... + 73765.

It is an arithmetic number, because the mean of its divisors is an integer number (15718752).

Almost surely, 2^144669742 is an apocalyptic number.

144669742 is a deficient number, since it is larger than the sum of its proper divisors (106830290).

144669742 is a wasteful number, since it uses less digits than its factorization.

144669742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145623.

The product of its digits is 290304, while the sum is 43.

The square root of 144669742 is about 12027.8735443968. The cubic root of 144669742 is about 524.9596244082.

The spelling of 144669742 in words is "one hundred forty-four million, six hundred sixty-nine thousand, seven hundred forty-two".