142404501 has 16 divisors (see below), whose sum is σ = 194298624. Its totient is φ = 92731584.

The previous prime is 142404497. The next prime is 142404503. The reversal of 142404501 is 105404241.

It is a happy number.

It is not a de Polignac number, because 142404501 - 2² = 142404497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142404503) 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, 140071 + ... + 141083.

It is an arithmetic number, because the mean of its divisors is an integer number (12143664).

Almost surely, 2^142404501 is an apocalyptic number.

It is an amenable number.

142404501 is a deficient number, since it is larger than the sum of its proper divisors (51894123).

142404501 is a wasteful number, since it uses less digits than its factorization.

142404501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 142404501 is about 11933.3357029793. The cubic root of 142404501 is about 522.2052561076.

Adding to 142404501 its reverse (105404241), we get a palindrome (247808742).

The spelling of 142404501 in words is "one hundred forty-two million, four hundred four thousand, five hundred one".