1026689042 has 16 divisors (see below), whose sum is σ = 1608723072. Its totient is φ = 490496160.

The previous prime is 1026689033. The next prime is 1026689071. The reversal of 1026689042 is 2409866201.

It is a super-4 number, since 4×1026689042⁴ (a number of 37 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1026688987 and 1026689005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32942 + ... + 56022.

It is an arithmetic number, because the mean of its divisors is an integer number (100545192).

Almost surely, 2^1026689042 is an apocalyptic number.

1026689042 is a deficient number, since it is larger than the sum of its proper divisors (582034030).

1026689042 is a wasteful number, since it uses less digits than its factorization.

1026689042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24073.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1026689042 is about 32041.9887335353. The cubic root of 1026689042 is about 1008.8183553603.

The spelling of 1026689042 in words is "one billion, twenty-six million, six hundred eighty-nine thousand, forty-two".