42545252123 has 16 divisors (see below), whose sum is σ = 47736706560. Its totient is φ = 37577455200.

The previous prime is 42545252107. The next prime is 42545252131. The reversal of 42545252123 is 32125254524.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42545252123 - 2⁴ = 42545252107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42545252723) 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, 205598 + ... + 356876.

It is an arithmetic number, because the mean of its divisors is an integer number (2983544160).

Almost surely, 2^42545252123 is an apocalyptic number.

42545252123 is a deficient number, since it is larger than the sum of its proper divisors (5191454437).

42545252123 is a wasteful number, since it uses less digits than its factorization.

42545252123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152018.

The product of its digits is 96000, while the sum is 35.

The spelling of 42545252123 in words is "forty-two billion, five hundred forty-five million, two hundred fifty-two thousand, one hundred twenty-three".