73143286442 has 4 divisors (see below), whose sum is σ = 109714929666. Its totient is φ = 36571643220.

The previous prime is 73143286427. The next prime is 73143286451. The reversal of 73143286442 is 24468234137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24468234137 = 2203 ⋅11106779.

It can be written as a sum of positive squares in only one way, i.e., 72360462001 + 782824441 = 268999^2 + 27979^2 .

It is a super-2 number, since 2×73143286442² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73143286393 and 73143286402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18285821609 + ... + 18285821612.

Almost surely, 2^73143286442 is an apocalyptic number.

73143286442 is a deficient number, since it is larger than the sum of its proper divisors (36571643224).

73143286442 is a wasteful number, since it uses less digits than its factorization.

73143286442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36571643223.

The product of its digits is 774144, while the sum is 44.

The spelling of 73143286442 in words is "seventy-three billion, one hundred forty-three million, two hundred eighty-six thousand, four hundred forty-two".