545542123 has 8 divisors (see below), whose sum is σ = 643589120. Its totient is φ = 452523240.

The previous prime is 545542103. The next prime is 545542133. The reversal of 545542123 is 321245545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 545542123 - 2¹³ = 545533931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545542103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1256793 + ... + 1257226.

It is an arithmetic number, because the mean of its divisors is an integer number (80448640).

Almost surely, 2^545542123 is an apocalyptic number.

545542123 is a deficient number, since it is larger than the sum of its proper divisors (98046997).

545542123 is a wasteful number, since it uses less digits than its factorization.

545542123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514057.

The product of its digits is 24000, while the sum is 31.

The square root of 545542123 is about 23356.8431728262. The cubic root of 545542123 is about 817.1016669264.

Adding to 545542123 its reverse (321245545), we get a palindrome (866787668).

The spelling of 545542123 in words is "five hundred forty-five million, five hundred forty-two thousand, one hundred twenty-three".