23440042426 has 8 divisors (see below), whose sum is σ = 35184603924. Its totient is φ = 11711841120.

The previous prime is 23440042399. The next prime is 23440042427. The reversal of 23440042426 is 62424004432.

It can be written as a sum of positive squares in 2 ways, for example, as 22907125201 + 532917225 = 151351^2 + 23085^2 .

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

It is not an unprimeable number, because it can be changed into a prime (23440042427) 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, 4086465 + ... + 4092196.

Almost surely, 2^23440042426 is an apocalyptic number.

23440042426 is a deficient number, since it is larger than the sum of its proper divisors (11744561498).

23440042426 is a wasteful number, since it uses less digits than its factorization.

23440042426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8180096.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 23440042426 its reverse (62424004432), we get a palindrome (85864046858).

The spelling of 23440042426 in words is "twenty-three billion, four hundred forty million, forty-two thousand, four hundred twenty-six".