145685542 has 12 divisors (see below), whose sum is σ = 228444300. Its totient is φ = 69675188.

The previous prime is 145685509. The next prime is 145685593. The reversal of 145685542 is 245586541.

It is a junction number, because it is equal to n+sod(n) for n = 145685495 and 145685504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67792 + ... + 69907.

It is an arithmetic number, because the mean of its divisors is an integer number (19037025).

Almost surely, 2^145685542 is an apocalyptic number.

145685542 is a deficient number, since it is larger than the sum of its proper divisors (82758758).

145685542 is a wasteful number, since it uses less digits than its factorization.

145685542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137747 (or 137724 counting only the distinct ones).

The product of its digits is 192000, while the sum is 40.

The square root of 145685542 is about 12070.0265948340. The cubic root of 145685542 is about 526.1854295704.

Subtracting 145685542 from its reverse (245586541), we obtain a palindrome (99900999).

The spelling of 145685542 in words is "one hundred forty-five million, six hundred eighty-five thousand, five hundred forty-two".