142305345 has 192 divisors, whose sum is σ = 335462400. Its totient is φ = 54120960.

The previous prime is 142305343. The next prime is 142305391. The reversal of 142305345 is 543503241.

142305345 is a `hidden beast` number, since 14 + 2 + 305 + 345 = 666.

It is not a de Polignac number, because 142305345 - 2¹ = 142305343 is a prime.

It is a super-2 number, since 2×142305345² = 40501622431138050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142305341) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 2411926 + ... + 2411984.

It is an arithmetic number, because the mean of its divisors is an integer number (1747200).

Almost surely, 2^142305345 is an apocalyptic number.

142305345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142305345 is an abundant number, since it is smaller than the sum of its proper divisors (193157055).

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

142305345 is a wasteful number, since it uses less digits than its factorization.

142305345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 142305345 is about 11929.1803993401. The cubic root of 142305345 is about 522.0840244360.

Adding to 142305345 its reverse (543503241), we get a palindrome (685808586).

The spelling of 142305345 in words is "one hundred forty-two million, three hundred five thousand, three hundred forty-five".