1020423642 has 16 divisors (see below), whose sum is σ = 2332396992. Its totient is φ = 291549600.

The previous prime is 1020423637. The next prime is 1020423653. The reversal of 1020423642 is 2463240201.

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, 12147859 + ... + 12147942.

It is an arithmetic number, because the mean of its divisors is an integer number (145774812).

Almost surely, 2^1020423642 is an apocalyptic number.

1020423642 is an abundant number, since it is smaller than the sum of its proper divisors (1311973350).

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

1020423642 is a wasteful number, since it uses less digits than its factorization.

1020423642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24295813.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1020423642 is about 31944.0705295991. The cubic root of 1020423642 is about 1006.7620522503.

Adding to 1020423642 its reverse (2463240201), we get a palindrome (3483663843).

The spelling of 1020423642 in words is "one billion, twenty million, four hundred twenty-three thousand, six hundred forty-two".