2102432021042 has 32 divisors (see below), whose sum is σ = 3454898151600. Its totient is φ = 955097837568.

The previous prime is 2102432021029. The next prime is 2102432021099. The reversal of 2102432021042 is 2401202342012.

It can be written as a sum of positive squares in 8 ways, for example, as 1336315192081 + 766116828961 = 1155991^2 + 875281^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2102432020999 and 2102432021017.

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, 5605178 + ... + 5968490.

Almost surely, 2^{2102432021042} is an apocalyptic number.

2102432021042 is a deficient number, since it is larger than the sum of its proper divisors (1352466130558).

2102432021042 is a wasteful number, since it uses less digits than its factorization.

2102432021042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369230.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 2102432021042 its reverse (2401202342012), we get a palindrome (4503634363054).

The spelling of 2102432021042 in words is "two trillion, one hundred two billion, four hundred thirty-two million, twenty-one thousand, forty-two".