642024137253 has 16 divisors (see below), whose sum is σ = 868439676416. Its totient is φ = 421851734640.

The previous prime is 642024137231. The next prime is 642024137309. The reversal of 642024137253 is 352731420246.

It is not a de Polignac number, because 642024137253 - 2⁸ = 642024136997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642024137213) 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, 4858375 + ... + 4988772.

It is an arithmetic number, because the mean of its divisors is an integer number (54277479776).

Almost surely, 2^642024137253 is an apocalyptic number.

It is an amenable number.

642024137253 is a deficient number, since it is larger than the sum of its proper divisors (226415539163).

642024137253 is a wasteful number, since it uses less digits than its factorization.

642024137253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9847464.

The product of its (nonzero) digits is 241920, while the sum is 39.

Adding to 642024137253 its reverse (352731420246), we get a palindrome (994755557499).

The spelling of 642024137253 in words is "six hundred forty-two billion, twenty-four million, one hundred thirty-seven thousand, two hundred fifty-three".