145423543442 has 8 divisors (see below), whose sum is σ = 218202422832. Its totient is φ = 72689402500.

The previous prime is 145423543337. The next prime is 145423543583. The reversal of 145423543442 is 244345324541.

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

It is a super-2 number, since 2×145423543442² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145423543442.

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, 11176484 + ... + 11189487.

It is an arithmetic number, because the mean of its divisors is an integer number (27275302854).

Almost surely, 2^145423543442 is an apocalyptic number.

145423543442 is a deficient number, since it is larger than the sum of its proper divisors (72778879390).

145423543442 is a wasteful number, since it uses less digits than its factorization.

145423543442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22369224.

The product of its digits is 921600, while the sum is 41.

Adding to 145423543442 its reverse (244345324541), we get a palindrome (389768867983).

The spelling of 145423543442 in words is "one hundred forty-five billion, four hundred twenty-three million, five hundred forty-three thousand, four hundred forty-two".