1021142342 has 8 divisors (see below), whose sum is σ = 1670960232. Its totient is φ = 464155600.

The previous prime is 1021142329. The next prime is 1021142347. The reversal of 1021142342 is 2432411201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021142347) 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 3 ways as a sum of consecutive naturals, for example, 23207759 + ... + 23207802.

It is an arithmetic number, because the mean of its divisors is an integer number (208870029).

Almost surely, 2^1021142342 is an apocalyptic number.

1021142342 is a deficient number, since it is larger than the sum of its proper divisors (649817890).

1021142342 is a wasteful number, since it uses less digits than its factorization.

1021142342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46415574.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1021142342 is about 31955.3178985908. The cubic root of 1021142342 is about 1006.9983560925.

Adding to 1021142342 its reverse (2432411201), we get a palindrome (3453553543).

The spelling of 1021142342 in words is "one billion, twenty-one million, one hundred forty-two thousand, three hundred forty-two".