145102723 has 4 divisors (see below), whose sum is σ = 149783488. Its totient is φ = 140421960.

The previous prime is 145102721. The next prime is 145102729. The reversal of 145102723 is 327201541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145102723 - 2¹ = 145102721 is a prime.

It is a super-3 number, since 3×145102723³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145102721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2340336 + ... + 2340397.

It is an arithmetic number, because the mean of its divisors is an integer number (37445872).

Almost surely, 2^145102723 is an apocalyptic number.

145102723 is a deficient number, since it is larger than the sum of its proper divisors (4680765).

145102723 is an equidigital number, since it uses as much as digits as its factorization.

145102723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4680764.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 145102723 is about 12045.8591640447. The cubic root of 145102723 is about 525.4828187247.

The spelling of 145102723 in words is "one hundred forty-five million, one hundred two thousand, seven hundred twenty-three".