1021442434 has 8 divisors (see below), whose sum is σ = 1541563920. Its totient is φ = 507587796.

The previous prime is 1021442431. The next prime is 1021442453. The reversal of 1021442434 is 4342441201.

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

It is a junction number, because it is equal to n+sod(n) for n = 1021442399 and 1021442408.

It is not an unprimeable number, because it can be changed into a prime (1021442431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1566304 + ... + 1566955.

It is an arithmetic number, because the mean of its divisors is an integer number (192695490).

Almost surely, 2^1021442434 is an apocalyptic number.

1021442434 is a deficient number, since it is larger than the sum of its proper divisors (520121486).

1021442434 is a wasteful number, since it uses less digits than its factorization.

1021442434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3133424.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1021442434 is about 31960.0130475568. The cubic root of 1021442434 is about 1007.0969915587.

Adding to 1021442434 its reverse (4342441201), we get a palindrome (5363883635).

The spelling of 1021442434 in words is "one billion, twenty-one million, four hundred forty-two thousand, four hundred thirty-four".