145039623 has 8 divisors (see below), whose sum is σ = 193550448. Its totient is φ = 96610944.

The previous prime is 145039613. The next prime is 145039637. The reversal of 145039623 is 326930541.

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

It is not a de Polignac number, because 145039623 - 2¹³ = 145031431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145039613) 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, 16290 + ... + 23567.

It is an arithmetic number, because the mean of its divisors is an integer number (24193806).

Almost surely, 2^145039623 is an apocalyptic number.

145039623 is a deficient number, since it is larger than the sum of its proper divisors (48510825).

145039623 is a wasteful number, since it uses less digits than its factorization.

145039623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41073.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 145039623 is about 12043.2397219353. The cubic root of 145039623 is about 525.4066364342.

The spelling of 145039623 in words is "one hundred forty-five million, thirty-nine thousand, six hundred twenty-three".