1642542512 has 40 divisors (see below), whose sum is σ = 3440675616. Its totient is φ = 755122176.

The previous prime is 1642542481. The next prime is 1642542521. The reversal of 1642542512 is 2152452461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38093 + ... + 68819.

Almost surely, 2^1642542512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642542512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1720337808).

1642542512 is an abundant number, since it is smaller than the sum of its proper divisors (1798133104).

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

1642542512 is a wasteful number, since it uses less digits than its factorization.

1642542512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31005 (or 30999 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 1642542512 is about 40528.2927348291. The cubic root of 1642542512 is about 1179.8828074746.

Adding to 1642542512 its reverse (2152452461), we get a palindrome (3794994973).

The spelling of 1642542512 in words is "one billion, six hundred forty-two million, five hundred forty-two thousand, five hundred twelve".