30213542 has 16 divisors (see below), whose sum is σ = 46072800. Its totient is φ = 14857920.

The previous prime is 30213541. The next prime is 30213593. The reversal of 30213542 is 24531203.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30213541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47567 + ... + 48197.

It is an arithmetic number, because the mean of its divisors is an integer number (2879550).

Almost surely, 2^30213542 is an apocalyptic number.

30213542 is a deficient number, since it is larger than the sum of its proper divisors (15859258).

30213542 is a wasteful number, since it uses less digits than its factorization.

30213542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30213542 is about 5496.6846371245. The cubic root of 30213542 is about 311.4587578204.

Adding to 30213542 its reverse (24531203), we get a palindrome (54744745).

The spelling of 30213542 in words is "thirty million, two hundred thirteen thousand, five hundred forty-two".