145442750 has 32 divisors (see below), whose sum is σ = 274408992. Its totient is φ = 57720000.

The previous prime is 145442741. The next prime is 145442753. The reversal of 145442750 is 57244541.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145442753) 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, 30530 + ... + 34970.

It is an arithmetic number, because the mean of its divisors is an integer number (8575281).

Almost surely, 2^145442750 is an apocalyptic number.

145442750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145442750 is a deficient number, since it is larger than the sum of its proper divisors (128966242).

145442750 is a wasteful number, since it uses less digits than its factorization.

145442750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589 (or 4579 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 145442750 is about 12059.9647594842. The cubic root of 145442750 is about 525.8929625531.

The spelling of 145442750 in words is "one hundred forty-five million, four hundred forty-two thousand, seven hundred fifty".