1021444142 has 8 divisors (see below), whose sum is σ = 1612806600. Its totient is φ = 483841944.

The previous prime is 1021444129. The next prime is 1021444153. The reversal of 1021444142 is 2414441201.

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

It is a super-2 number, since 2×1021444142² = 2086696270452232328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13440017 + ... + 13440092.

It is an arithmetic number, because the mean of its divisors is an integer number (201600825).

Almost surely, 2^1021444142 is an apocalyptic number.

1021444142 is a deficient number, since it is larger than the sum of its proper divisors (591362458).

1021444142 is a wasteful number, since it uses less digits than its factorization.

1021444142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26880130.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 1021444142 is about 31960.0397684358. The cubic root of 1021444142 is about 1007.0975528959.

Adding to 1021444142 its reverse (2414441201), we get a palindrome (3435885343).

The spelling of 1021444142 in words is "one billion, twenty-one million, four hundred forty-four thousand, one hundred forty-two".