145530542 has 4 divisors (see below), whose sum is σ = 218295816. Its totient is φ = 72765270.

The previous prime is 145530493. The next prime is 145530551. The reversal of 145530542 is 245035541.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36382634 + ... + 36382637.

It is an arithmetic number, because the mean of its divisors is an integer number (54573954).

Almost surely, 2^145530542 is an apocalyptic number.

145530542 is a deficient number, since it is larger than the sum of its proper divisors (72765274).

145530542 is an equidigital number, since it uses as much as digits as its factorization.

145530542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72765273.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 145530542 is about 12063.6040220160. The cubic root of 145530542 is about 525.9987542559.

The spelling of 145530542 in words is "one hundred forty-five million, five hundred thirty thousand, five hundred forty-two".