426012121 has 4 divisors (see below), whose sum is σ = 428725732. Its totient is φ = 423298512.

The previous prime is 426012113. The next prime is 426012127. The reversal of 426012121 is 121210624.

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

It can be written as a sum of positive squares in 2 ways, for example, as 164737225 + 261274896 = 12835^2 + 16164^2 .

It is a cyclic number.

It is not a de Polignac number, because 426012121 - 2³ = 426012113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426012127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1356570 + ... + 1356883.

It is an arithmetic number, because the mean of its divisors is an integer number (107181433).

Almost surely, 2^426012121 is an apocalyptic number.

It is an amenable number.

426012121 is a deficient number, since it is larger than the sum of its proper divisors (2713611).

426012121 is a wasteful number, since it uses less digits than its factorization.

426012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2713610.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 426012121 is about 20640.0610706461. The cubic root of 426012121 is about 752.4436566682.

Adding to 426012121 its reverse (121210624), we get a palindrome (547222745).

The spelling of 426012121 in words is "four hundred twenty-six million, twelve thousand, one hundred twenty-one".