30153942 has 96 divisors (see below), whose sum is σ = 82555200. Its totient is φ = 7741440.

The previous prime is 30153941. The next prime is 30154013. The reversal of 30153942 is 24935103.

It is a super-3 number, since 3×30153942³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30153941) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 66934 + ... + 67382.

It is an arithmetic number, because the mean of its divisors is an integer number (859950).

Almost surely, 2^30153942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30153942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41277600).

30153942 is an abundant number, since it is smaller than the sum of its proper divisors (52401258).

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

30153942 is a wasteful number, since it uses less digits than its factorization.

30153942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 30153942 is about 5491.2605110302. The cubic root of 30153942 is about 311.2538258590.

The spelling of 30153942 in words is "thirty million, one hundred fifty-three thousand, nine hundred forty-two".