30142402 has 8 divisors (see below), whose sum is σ = 45517500. Its totient is φ = 14969904.

The previous prime is 30142393. The next prime is 30142403. The reversal of 30142402 is 20424103.

It can be written as a sum of positive squares in 2 ways, for example, as 29387241 + 755161 = 5421^2 + 869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (30142403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50277 + ... + 50872.

Almost surely, 2^30142402 is an apocalyptic number.

30142402 is a deficient number, since it is larger than the sum of its proper divisors (15375098).

30142402 is a wasteful number, since it uses less digits than its factorization.

30142402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101300.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 30142402 is about 5490.2096499132. The cubic root of 30142402 is about 311.2141148824.

Adding to 30142402 its reverse (20424103), we get a palindrome (50566505).

The spelling of 30142402 in words is "thirty million, one hundred forty-two thousand, four hundred two".