1642235426 has 16 divisors (see below), whose sum is σ = 2653560000. Its totient is φ = 757749648.

The previous prime is 1642235389. The next prime is 1642235429. The reversal of 1642235426 is 6245322461.

It is not an unprimeable number, because it can be changed into a prime (1642235429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134525 + ... + 146223.

It is an arithmetic number, because the mean of its divisors is an integer number (165847500).

Almost surely, 2^1642235426 is an apocalyptic number.

1642235426 is a deficient number, since it is larger than the sum of its proper divisors (1011324574).

1642235426 is a wasteful number, since it uses less digits than its factorization.

1642235426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17113.

The product of its digits is 69120, while the sum is 35.

The square root of 1642235426 is about 40524.5040191734. The cubic root of 1642235426 is about 1179.8092734927.

Adding to 1642235426 its reverse (6245322461), we get a palindrome (7887557887).

The spelling of 1642235426 in words is "one billion, six hundred forty-two million, two hundred thirty-five thousand, four hundred twenty-six".