427247134 has 4 divisors (see below), whose sum is σ = 640870704. Its totient is φ = 213623566.

The previous prime is 427247131. The next prime is 427247147. The reversal of 427247134 is 431742724.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×427247134² = 365080227022427912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 427247134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427247131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106811782 + ... + 106811785.

It is an arithmetic number, because the mean of its divisors is an integer number (160217676).

Almost surely, 2^427247134 is an apocalyptic number.

427247134 is a deficient number, since it is larger than the sum of its proper divisors (213623570).

427247134 is a wasteful number, since it uses less digits than its factorization.

427247134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213623569.

The product of its digits is 37632, while the sum is 34.

The square root of 427247134 is about 20669.9572810396. The cubic root of 427247134 is about 753.1700688214.

Adding to 427247134 its reverse (431742724), we get a palindrome (858989858).

The spelling of 427247134 in words is "four hundred twenty-seven million, two hundred forty-seven thousand, one hundred thirty-four".