27021042 has 12 divisors (see below), whose sum is σ = 58545630. Its totient is φ = 9007008.

The previous prime is 27021037. The next prime is 27021047. The reversal of 27021042 is 24012072.

It is an interprime number because it is at equal distance from previous prime (27021037) and next prime (27021047).

It can be written as a sum of positive squares in only one way, i.e., 15992001 + 11029041 = 3999^2 + 3321^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1501169 = 27021042 / (2 + 7 + 0 + 2 + 1 + 0 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (27021047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 750567 + ... + 750602.

Almost surely, 2^27021042 is an apocalyptic number.

27021042 is an abundant number, since it is smaller than the sum of its proper divisors (31524588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27021042 is a wasteful number, since it uses less digits than its factorization.

27021042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501177 (or 1501174 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 27021042 is about 5198.1767957621. The cubic root of 27021042 is about 300.0779130967.

It can be divided in two parts, 270 and 21042, that added together give a palindrome (21312).

The spelling of 27021042 in words is "twenty-seven million, twenty-one thousand, forty-two".