15442005442 has 8 divisors (see below), whose sum is σ = 23164199100. Its totient is φ = 7720605744.

The previous prime is 15442005427. The next prime is 15442005457. The reversal of 15442005442 is 24450024451.

It is an interprime number because it is at equal distance from previous prime (15442005427) and next prime (15442005457).

It can be written as a sum of positive squares in 2 ways, for example, as 14364262201 + 1077743241 = 119851^2 + 32829^2 .

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

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, 147217 + ... + 229252.

Almost surely, 2^15442005442 is an apocalyptic number.

15442005442 is a deficient number, since it is larger than the sum of its proper divisors (7722193658).

15442005442 is a wasteful number, since it uses less digits than its factorization.

15442005442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396980.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 15442005442 its reverse (24450024451), we get a palindrome (39892029893).

The spelling of 15442005442 in words is "fifteen billion, four hundred forty-two million, five thousand, four hundred forty-two".