145865242 has 16 divisors (see below), whose sum is σ = 233472960. Its totient is φ = 68146272.

The previous prime is 145865221. The next prime is 145865243. The reversal of 145865242 is 242568541.

It is not an unprimeable number, because it can be changed into a prime (145865243) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23518 + ... + 29065.

It is an arithmetic number, because the mean of its divisors is an integer number (14592060).

Almost surely, 2^145865242 is an apocalyptic number.

145865242 is a deficient number, since it is larger than the sum of its proper divisors (87607718).

145865242 is a wasteful number, since it uses less digits than its factorization.

145865242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52677.

The product of its digits is 76800, while the sum is 37.

The square root of 145865242 is about 12077.4683605464. The cubic root of 145865242 is about 526.4016868361.

The spelling of 145865242 in words is "one hundred forty-five million, eight hundred sixty-five thousand, two hundred forty-two".