145242405626 has 4 divisors (see below), whose sum is σ = 217863608442. Its totient is φ = 72621202812.

The previous prime is 145242405611. The next prime is 145242405631. The reversal of 145242405626 is 626504242541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 626504242541 = 120833 ⋅5184877.

It can be written as a sum of positive squares in only one way, i.e., 114954224401 + 30288181225 = 339049^2 + 174035^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36310601405 + ... + 36310601408.

Almost surely, 2^145242405626 is an apocalyptic number.

145242405626 is a deficient number, since it is larger than the sum of its proper divisors (72621202816).

145242405626 is an equidigital number, since it uses as much as digits as its factorization.

145242405626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72621202815.

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 145242405626 in words is "one hundred forty-five billion, two hundred forty-two million, four hundred five thousand, six hundred twenty-six".