1021420432142 has 8 divisors (see below), whose sum is σ = 1671415252632. Its totient is φ = 464282014600.

The previous prime is 1021420432133. The next prime is 1021420432157. The reversal of 1021420432142 is 2412340241201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23214100709 + ... + 23214100752.

It is an arithmetic number, because the mean of its divisors is an integer number (208926906579).

Almost surely, 2^{1021420432142} is an apocalyptic number.

1021420432142 is a deficient number, since it is larger than the sum of its proper divisors (649994820490).

1021420432142 is a wasteful number, since it uses less digits than its factorization.

1021420432142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46428201474.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 1021420432142 its reverse (2412340241201), we get a palindrome (3433760673343).

The spelling of 1021420432142 in words is "one trillion, twenty-one billion, four hundred twenty million, four hundred thirty-two thousand, one hundred forty-two".