45432123 has 32 divisors (see below), whose sum is σ = 68504832. Its totient is φ = 26544000.

The previous prime is 45432103. The next prime is 45432131. The reversal of 45432123 is 32123454.

45432123 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 45432123 - 2⁹ = 45431611 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 45432093 and 45432102.

It is not an unprimeable number, because it can be changed into a prime (45432103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 143161 + ... + 143477.

It is an arithmetic number, because the mean of its divisors is an integer number (2140776).

Almost surely, 2^45432123 is an apocalyptic number.

45432123 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

45432123 is a deficient number, since it is larger than the sum of its proper divisors (23072709).

45432123 is a wasteful number, since it uses less digits than its factorization.

45432123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475.

The product of its digits is 2880, while the sum is 24.

The square root of 45432123 is about 6740.3355257732. The cubic root of 45432123 is about 356.8242353642.

Adding to 45432123 its reverse (32123454), we get a palindrome (77555577).

It can be divided in two parts, 4543 and 2123, that added together give a palindrome (6666).

The spelling of 45432123 in words is "forty-five million, four hundred thirty-two thousand, one hundred twenty-three".