30386142 has 24 divisors (see below), whose sum is σ = 68108040. Its totient is φ = 9779280.

The previous prime is 30386141. The next prime is 30386179. The reversal of 30386142 is 24168303.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30386141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28584 + ... + 29627.

It is an arithmetic number, because the mean of its divisors is an integer number (2837835).

Almost surely, 2^30386142 is an apocalyptic number.

30386142 is an abundant number, since it is smaller than the sum of its proper divisors (37721898).

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

30386142 is a wasteful number, since it uses less digits than its factorization.

30386142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58248 (or 58245 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 30386142 is about 5512.3626513501. The cubic root of 30386142 is about 312.0507190722.

It can be divided in two parts, 3038 and 6142, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 30386142 in words is "thirty million, three hundred eighty-six thousand, one hundred forty-two".