642341125 has 16 divisors (see below), whose sum is σ = 836499456. Its totient is φ = 491528400.

The previous prime is 642341123. The next prime is 642341149. The reversal of 642341125 is 521143246.

It is not a de Polignac number, because 642341125 - 2¹ = 642341123 is a prime.

It is a super-3 number, since 3×642341125³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 642341093 and 642341102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642341123) 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, 108837 + ... + 114586.

It is an arithmetic number, because the mean of its divisors is an integer number (52281216).

Almost surely, 2^642341125 is an apocalyptic number.

It is an amenable number.

642341125 is a deficient number, since it is larger than the sum of its proper divisors (194158331).

642341125 is a wasteful number, since it uses less digits than its factorization.

642341125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223461 (or 223451 counting only the distinct ones).

The product of its digits is 5760, while the sum is 28.

The square root of 642341125 is about 25344.4495896044. The cubic root of 642341125 is about 862.8233891990.

The spelling of 642341125 in words is "six hundred forty-two million, three hundred forty-one thousand, one hundred twenty-five".