1020632142 has 16 divisors (see below), whose sum is σ = 2048480640. Its totient is φ = 339007992.

The previous prime is 1020632131. The next prime is 1020632149. The reversal of 1020632142 is 2412360201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020632149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298842 + ... + 302237.

It is an arithmetic number, because the mean of its divisors is an integer number (128030040).

Almost surely, 2^1020632142 is an apocalyptic number.

1020632142 is an abundant number, since it is smaller than the sum of its proper divisors (1027848498).

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

1020632142 is a wasteful number, since it uses less digits than its factorization.

1020632142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601367.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1020632142 is about 31947.3338793709. Note that the first 3 decimals coincide. The cubic root of 1020632142 is about 1006.8306171039.

Adding to 1020632142 its reverse (2412360201), we get a palindrome (3432992343).

The spelling of 1020632142 in words is "one billion, twenty million, six hundred thirty-two thousand, one hundred forty-two".