145724293 has 12 divisors (see below), whose sum is σ = 172499404. Its totient is φ = 122284800.

The previous prime is 145724287. The next prime is 145724309. The reversal of 145724293 is 392427541.

145724293 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 94128804 + 51595489 = 9702^2 + 7183^2 .

It is not a de Polignac number, because 145724293 - 2⁵ = 145724261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145724213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44748 + ... + 47893.

Almost surely, 2^145724293 is an apocalyptic number.

145724293 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145724293 is a deficient number, since it is larger than the sum of its proper divisors (26775111).

145724293 is a wasteful number, since it uses less digits than its factorization.

145724293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92676 (or 92665 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 145724293 is about 12071.6317455429. The cubic root of 145724293 is about 526.2320789123.

The spelling of 145724293 in words is "one hundred forty-five million, seven hundred twenty-four thousand, two hundred ninety-three".