30142422 has 32 divisors (see below), whose sum is σ = 67305600. Its totient is φ = 9999144.

The previous prime is 30142403. The next prime is 30142423. The reversal of 30142422 is 22424103.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 30142395 and 30142404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11029 + ... + 13487.

It is an arithmetic number, because the mean of its divisors is an integer number (2103300).

Almost surely, 2^30142422 is an apocalyptic number.

30142422 is an abundant number, since it is smaller than the sum of its proper divisors (37163178).

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

30142422 is a wasteful number, since it uses less digits than its factorization.

30142422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697 (or 2691 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 30142422 is about 5490.2114713370. The cubic root of 30142422 is about 311.2141837144.

Adding to 30142422 its reverse (22424103), we get a palindrome (52566525).

The spelling of 30142422 in words is "thirty million, one hundred forty-two thousand, four hundred twenty-two".