15420133 has 2 divisors, whose sum is σ = 15420134. Its totient is φ = 15420132.

The previous prime is 15420131. The next prime is 15420137. The reversal of 15420133 is 33102451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15108769 + 311364 = 3887^2 + 558^2 .

It is a cyclic number.

It is not a de Polignac number, because 15420133 - 2¹ = 15420131 is a prime.

Together with 15420131, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 15420133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15420131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7710066 + 7710067.

It is an arithmetic number, because the mean of its divisors is an integer number (7710067).

Almost surely, 2^15420133 is an apocalyptic number.

It is an amenable number.

15420133 is a deficient number, since it is larger than the sum of its proper divisors (1).

15420133 is an equidigital number, since it uses as much as digits as its factorization.

15420133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 15420133 is about 3926.8477179539. The cubic root of 15420133 is about 248.9025656001.

Adding to 15420133 its reverse (33102451), we get a palindrome (48522584).

The spelling of 15420133 in words is "fifteen million, four hundred twenty thousand, one hundred thirty-three".