1642231212 has 48 divisors (see below), whose sum is σ = 4060677600. Its totient is φ = 514778112.

The previous prime is 1642231181. The next prime is 1642231249. The reversal of 1642231212 is 2121322461.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 313398 + ... + 318594.

It is an arithmetic number, because the mean of its divisors is an integer number (84597450).

Almost surely, 2^1642231212 is an apocalyptic number.

1642231212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1642231212 is an abundant number, since it is smaller than the sum of its proper divisors (2418446388).

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

1642231212 is a wasteful number, since it uses less digits than its factorization.

1642231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770 (or 6768 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 1642231212 is about 40524.4520259065. The cubic root of 1642231212 is about 1179.8082643559.

Adding to 1642231212 its reverse (2121322461), we get a palindrome (3763553673).

The spelling of 1642231212 in words is "one billion, six hundred forty-two million, two hundred thirty-one thousand, two hundred twelve".