145642717 has 8 divisors (see below), whose sum is σ = 159472512. Its totient is φ = 131911200.

The previous prime is 145642709. The next prime is 145642747. The reversal of 145642717 is 717246541.

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

It is a cyclic number.

It is not a de Polignac number, because 145642717 - 2³ = 145642709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145642747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21448 + ... + 27409.

It is an arithmetic number, because the mean of its divisors is an integer number (19934064).

Almost surely, 2^145642717 is an apocalyptic number.

It is an amenable number.

145642717 is a deficient number, since it is larger than the sum of its proper divisors (13829795).

145642717 is a wasteful number, since it uses less digits than its factorization.

145642717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49139.

The product of its digits is 47040, while the sum is 37.

The square root of 145642717 is about 12068.2524418409. The cubic root of 145642717 is about 526.1338662305.

The spelling of 145642717 in words is "one hundred forty-five million, six hundred forty-two thousand, seven hundred seventeen".