423445523053542 has 48 divisors (see below), whose sum is σ = 932450022892080. Its totient is φ = 128100439160320.

The previous prime is 423445523053499. The next prime is 423445523053547. The reversal of 423445523053542 is 245350325544324.

It is a happy number.

It is a super-2 number, since 2×423445523053542² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423445523053547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 491355567 + ... + 492216602.

It is an arithmetic number, because the mean of its divisors is an integer number (19426042143585).

Almost surely, 2^{423445523053542} is an apocalyptic number.

423445523053542 is an abundant number, since it is smaller than the sum of its proper divisors (509004499838538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423445523053542 is a wasteful number, since it uses less digits than its factorization.

423445523053542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983572789 (or 983572778 counting only the distinct ones).

The product of its (nonzero) digits is 34560000, while the sum is 51.

Adding to 423445523053542 its reverse (245350325544324), we get a palindrome (668795848597866).

The spelling of 423445523053542 in words is "four hundred twenty-three trillion, four hundred forty-five billion, five hundred twenty-three million, fifty-three thousand, five hundred forty-two".