145123500 has 48 divisors (see below), whose sum is σ = 422604000. Its totient is φ = 38699200.

The previous prime is 145123499. The next prime is 145123507. The reversal of 145123500 is 5321541.

It is not an unprimeable number, because it can be changed into a prime (145123507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46875 + ... + 49874.

It is an arithmetic number, because the mean of its divisors is an integer number (8804250).

Almost surely, 2^145123500 is an apocalyptic number.

145123500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145123500 is an abundant number, since it is smaller than the sum of its proper divisors (277480500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145123500 is a wasteful number, since it uses less digits than its factorization.

145123500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96771 (or 96759 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 145123500 is about 12046.7215457152. The cubic root of 145123500 is about 525.5078985101.

The spelling of 145123500 in words is "one hundred forty-five million, one hundred twenty-three thousand, five hundred".