306142242 has 32 divisors (see below), whose sum is σ = 702062592. Its totient is φ = 87180624.

The previous prime is 306142223. The next prime is 306142253. The reversal of 306142242 is 242241603.

It is a super-3 number, since 3×306142242³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1023 + ... + 24765.

It is an arithmetic number, because the mean of its divisors is an integer number (21939456).

Almost surely, 2^306142242 is an apocalyptic number.

306142242 is an abundant number, since it is smaller than the sum of its proper divisors (395920350).

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

306142242 is a wasteful number, since it uses less digits than its factorization.

306142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24062.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 306142242 is about 17496.9209291235. The cubic root of 306142242 is about 673.9708079647.

Adding to 306142242 its reverse (242241603), we get a palindrome (548383845).

The spelling of 306142242 in words is "three hundred six million, one hundred forty-two thousand, two hundred forty-two".