23154020242 has 8 divisors (see below), whose sum is σ = 35038384956. Its totient is φ = 11474558592.

The previous prime is 23154020237. The next prime is 23154020251. The reversal of 23154020242 is 24202045132.

It can be written as a sum of positive squares in 2 ways, for example, as 15168631921 + 7985388321 = 123161^2 + 89361^2 .

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

It is a super-2 number, since 2×23154020242² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51225483 + ... + 51225934.

Almost surely, 2^23154020242 is an apocalyptic number.

23154020242 is a deficient number, since it is larger than the sum of its proper divisors (11884364714).

23154020242 is a wasteful number, since it uses less digits than its factorization.

23154020242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102451532.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 23154020242 its reverse (24202045132), we get a palindrome (47356065374).

The spelling of 23154020242 in words is "twenty-three billion, one hundred fifty-four million, twenty thousand, two hundred forty-two".