15423420023 has 4 divisors (see below), whose sum is σ = 16825549128. Its totient is φ = 14021290920.

The previous prime is 15423420013. The next prime is 15423420073. The reversal of 15423420023 is 32002432451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32002432451 = 11 ⋅2909312041.

It is a cyclic number.

It is not a de Polignac number, because 15423420023 - 2⁴ = 15423420007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15423419974 and 15423420001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15423420013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701064536 + ... + 701064557.

It is an arithmetic number, because the mean of its divisors is an integer number (4206387282).

Almost surely, 2^15423420023 is an apocalyptic number.

15423420023 is a deficient number, since it is larger than the sum of its proper divisors (1402129105).

15423420023 is a wasteful number, since it uses less digits than its factorization.

15423420023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1402129104.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 15423420023 its reverse (32002432451), we get a palindrome (47425852474).

The spelling of 15423420023 in words is "fifteen billion, four hundred twenty-three million, four hundred twenty thousand, twenty-three".