142405253 has 16 divisors (see below), whose sum is σ = 148642560. Its totient is φ = 136344000.

The previous prime is 142405157. The next prime is 142405271. The reversal of 142405253 is 352504241.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 142405253 - 2¹⁸ = 142143109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142404253) 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, 621743 + ... + 621971.

It is an arithmetic number, because the mean of its divisors is an integer number (9290160).

Almost surely, 2^142405253 is an apocalyptic number.

It is an amenable number.

142405253 is a deficient number, since it is larger than the sum of its proper divisors (6237307).

142405253 is a wasteful number, since it uses less digits than its factorization.

142405253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 142405253 is about 11933.3672113113. The cubic root of 142405253 is about 522.2061753146.

Adding to 142405253 its reverse (352504241), we get a palindrome (494909494).

The spelling of 142405253 in words is "one hundred forty-two million, four hundred five thousand, two hundred fifty-three".