144642004 has 12 divisors (see below), whose sum is σ = 272594644. Its totient is φ = 66757824.

The previous prime is 144641993. The next prime is 144642023. The reversal of 144642004 is 400246441.

It can be written as a sum of positive squares in 2 ways, for example, as 18079504 + 126562500 = 4252^2 + 11250^2 .

It is a super-2 number, since 2×144642004² = 41842618642272032, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 144642004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390737 + ... + 1390840.

Almost surely, 2^144642004 is an apocalyptic number.

It is an amenable number.

144642004 is a deficient number, since it is larger than the sum of its proper divisors (127952640).

144642004 is a wasteful number, since it uses less digits than its factorization.

144642004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781594 (or 2781592 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 144642004 is about 12026.7204174704. The cubic root of 144642004 is about 524.9260715252.

Adding to 144642004 its reverse (400246441), we get a palindrome (544888445).

The spelling of 144642004 in words is "one hundred forty-four million, six hundred forty-two thousand, four".