15742240433 has 4 divisors (see below), whose sum is σ = 16285076340. Its totient is φ = 15199404528.

The previous prime is 15742240343. The next prime is 15742240469. The reversal of 15742240433 is 33404224751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9918566464 + 5823673969 = 99592^2 + 76313^2 .

It is a cyclic number.

It is not a de Polignac number, because 15742240433 - 2¹² = 15742236337 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15742240393 and 15742240402.

It is not an unprimeable number, because it can be changed into a prime (15742248433) 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, 271417910 + ... + 271417967.

It is an arithmetic number, because the mean of its divisors is an integer number (4071269085).

Almost surely, 2^15742240433 is an apocalyptic number.

It is an amenable number.

15742240433 is a deficient number, since it is larger than the sum of its proper divisors (542835907).

15742240433 is an equidigital number, since it uses as much as digits as its factorization.

15742240433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542835906.

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 15742240433 in words is "fifteen billion, seven hundred forty-two million, two hundred forty thousand, four hundred thirty-three".