142404453 has 16 divisors (see below), whose sum is σ = 216672960. Its totient is φ = 92369808.

The previous prime is 142404419. The next prime is 142404469. The reversal of 142404453 is 354404241.

It is a happy number.

It is not a de Polignac number, because 142404453 - 2⁶ = 142404389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142404403) 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, 70275 + ... + 72272.

It is an arithmetic number, because the mean of its divisors is an integer number (13542060).

Almost surely, 2^142404453 is an apocalyptic number.

It is an amenable number.

142404453 is a deficient number, since it is larger than the sum of its proper divisors (74268507).

142404453 is a wasteful number, since it uses less digits than its factorization.

142404453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142593 (or 142587 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 142404453 is about 11933.3336918063. Note that the first 3 decimals coincide. The cubic root of 142404453 is about 522.2051974347.

Adding to 142404453 its reverse (354404241), we get a palindrome (496808694).

The spelling of 142404453 in words is "one hundred forty-two million, four hundred four thousand, four hundred fifty-three".