145442700 has 216 divisors, whose sum is σ = 508050816. Its totient is φ = 34560000.

The previous prime is 145442699. The next prime is 145442741. The reversal of 145442700 is 7244541.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 362500 + ... + 362900.

Almost surely, 2^145442700 is an apocalyptic number.

145442700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145442700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254025408).

145442700 is an abundant number, since it is smaller than the sum of its proper divisors (362608116).

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

145442700 is a wasteful number, since it uses less digits than its factorization.

145442700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 145442700 is about 12059.9626865094. The cubic root of 145442700 is about 525.8929022897.

The spelling of 145442700 in words is "one hundred forty-five million, four hundred forty-two thousand, seven hundred".