30494142 has 96 divisors (see below), whose sum is σ = 80431104. Its totient is φ = 8164800.

The previous prime is 30494137. The next prime is 30494143. The reversal of 30494142 is 24149403.

30494142 is a `hidden beast` number, since 30 + 494 + 142 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30494143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144417 + ... + 144627.

It is an arithmetic number, because the mean of its divisors is an integer number (837824).

Almost surely, 2^30494142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30494142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40215552).

30494142 is an abundant number, since it is smaller than the sum of its proper divisors (49936962).

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

30494142 is a wasteful number, since it uses less digits than its factorization.

30494142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 291 counting only the distinct ones).

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

The square root of 30494142 is about 5522.1501247250. The cubic root of 30494142 is about 312.4199842070.

The spelling of 30494142 in words is "thirty million, four hundred ninety-four thousand, one hundred forty-two".