1021306142 has 16 divisors (see below), whose sum is σ = 1554012432. Its totient is φ = 503347200.

The previous prime is 1021306141. The next prime is 1021306147. The reversal of 1021306142 is 2416031201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021306141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34718 + ... + 56990.

It is an arithmetic number, because the mean of its divisors is an integer number (97125777).

Almost surely, 2^1021306142 is an apocalyptic number.

1021306142 is a deficient number, since it is larger than the sum of its proper divisors (532706290).

1021306142 is a wasteful number, since it uses less digits than its factorization.

1021306142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22603.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1021306142 is about 31957.8807495115. The cubic root of 1021306142 is about 1007.0521969415.

Adding to 1021306142 its reverse (2416031201), we get a palindrome (3437337343).

The spelling of 1021306142 in words is "one billion, twenty-one million, three hundred six thousand, one hundred forty-two".