30142261 has 8 divisors (see below), whose sum is σ = 31182848. Its totient is φ = 29106000.

The previous prime is 30142247. The next prime is 30142267. The reversal of 30142261 is 16224103.

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

It is a cyclic number.

It is not a de Polignac number, because 30142261 - 2¹⁵ = 30109493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30142267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19756 + ... + 21226.

It is an arithmetic number, because the mean of its divisors is an integer number (3897856).

Almost surely, 2^30142261 is an apocalyptic number.

30142261 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30142261 is a deficient number, since it is larger than the sum of its proper divisors (1040587).

30142261 is a wasteful number, since it uses less digits than its factorization.

30142261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 30142261 is about 5490.1968088585. The cubic root of 30142261 is about 311.2136296163.

Adding to 30142261 its reverse (16224103), we get a palindrome (46366364).

It can be divided in two parts, 30142 and 261, that added together give a palindrome (30403).

The spelling of 30142261 in words is "thirty million, one hundred forty-two thousand, two hundred sixty-one".