306661142 has 4 divisors (see below), whose sum is σ = 459991716. Its totient is φ = 153330570.

The previous prime is 306661133. The next prime is 306661151. The reversal of 306661142 is 241166603.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241166603 = 3761 ⋅64123.

It is an interprime number because it is at equal distance from previous prime (306661133) and next prime (306661151).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 76665284 + ... + 76665287.

It is an arithmetic number, because the mean of its divisors is an integer number (114997929).

Almost surely, 2^306661142 is an apocalyptic number.

306661142 is a deficient number, since it is larger than the sum of its proper divisors (153330574).

306661142 is a wasteful number, since it uses less digits than its factorization.

306661142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153330573.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 306661142 is about 17511.7429743587. The cubic root of 306661142 is about 674.3513783888.

The spelling of 306661142 in words is "three hundred six million, six hundred sixty-one thousand, one hundred forty-two".