145239210 has 64 divisors (see below), whose sum is σ = 392031360. Its totient is φ = 38257920.

The previous prime is 145239197. The next prime is 145239223. The reversal of 145239210 is 12932541.

It is an interprime number because it is at equal distance from previous prime (145239197) and next prime (145239223).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19170 + ... + 25650.

It is an arithmetic number, because the mean of its divisors is an integer number (6125490).

Almost surely, 2^145239210 is an apocalyptic number.

145239210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 145239210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196015680).

145239210 is an abundant number, since it is smaller than the sum of its proper divisors (246792150).

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

145239210 is a wasteful number, since it uses less digits than its factorization.

145239210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580 (or 6574 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 145239210 is about 12051.5231402508. The cubic root of 145239210 is about 525.6475275510.

The spelling of 145239210 in words is "one hundred forty-five million, two hundred thirty-nine thousand, two hundred ten".