1071428 has 6 divisors (see below), whose sum is σ = 1875006. Its totient is φ = 535712.

The previous prime is 1071419. The next prime is 1071439. The reversal of 1071428 is 8241701.

1071428 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in only one way, i.e., 917764 + 153664 = 958^2 + 392^2 .

It is a super-2 number, since 2×1071428² = 2295915918368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133925 + ... + 133932.

It is an arithmetic number, because the mean of its divisors is an integer number (312501).

2^1071428 is an apocalyptic number.

It is an amenable number.

1071428 is a deficient number, since it is larger than the sum of its proper divisors (803578).

1071428 is a wasteful number, since it uses less digits than its factorization.

1071428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267861 (or 267859 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 1071428 is about 1035.0980629873. The cubic root of 1071428 is about 102.3263926180.

It can be divided in two parts, 10714 and 28, that multiplied together give a palindrome (299992).

The spelling of 1071428 in words is "one million, seventy-one thousand, four hundred twenty-eight".