27121402 has 48 divisors (see below), whose sum is σ = 52284960. Its totient is φ = 10432800.

The previous prime is 27121321. The next prime is 27121403. The reversal of 27121402 is 20412172.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 27121402.

It is not an unprimeable number, because it can be changed into a prime (27121403) 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 23 ways as a sum of consecutive naturals, for example, 149752 + ... + 149932.

It is an arithmetic number, because the mean of its divisors is an integer number (1089270).

Almost surely, 2^27121402 is an apocalyptic number.

27121402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

27121402 is a deficient number, since it is larger than the sum of its proper divisors (25163558).

27121402 is a wasteful number, since it uses less digits than its factorization.

27121402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 27121402 is about 5207.8212334910. The cubic root of 27121402 is about 300.4489648039.

Adding to 27121402 its reverse (20412172), we get a palindrome (47533574).

It can be divided in two parts, 2712 and 1402, that added together give a palindrome (4114).

The spelling of 27121402 in words is "twenty-seven million, one hundred twenty-one thousand, four hundred two".