145505542 has 16 divisors (see below), whose sum is σ = 268625952. Its totient is φ = 57562560.

The previous prime is 145505531. The next prime is 145505543. The reversal of 145505542 is 245505541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145505543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399559 + ... + 399922.

It is an arithmetic number, because the mean of its divisors is an integer number (16789122).

Almost surely, 2^145505542 is an apocalyptic number.

145505542 is a deficient number, since it is larger than the sum of its proper divisors (123120410).

145505542 is a wasteful number, since it uses less digits than its factorization.

145505542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799503.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 145505542 is about 12062.5678029182. The cubic root of 145505542 is about 525.9686329226.

Subtracting 145505542 from its reverse (245505541), we obtain a palindrome (99999999).

The spelling of 145505542 in words is "one hundred forty-five million, five hundred five thousand, five hundred forty-two".