1051406 has 8 divisors (see below), whose sum is σ = 1589544. Its totient is φ = 521560.

The previous prime is 1051397. The next prime is 1051409. The reversal of 1051406 is 6041501.

It is a happy number.

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

It is a super-2 number, since 2×1051406² = 2210909153672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051409) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1745 + ... + 2268.

It is an arithmetic number, because the mean of its divisors is an integer number (198693).

2^1051406 is an apocalyptic number.

1051406 is a deficient number, since it is larger than the sum of its proper divisors (538138).

1051406 is a wasteful number, since it uses less digits than its factorization.

1051406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4146.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1051406 is about 1025.3809048349. The cubic root of 1051406 is about 101.6849822178.

Adding to 1051406 its reverse (6041501), we get a palindrome (7092907).

The spelling of 1051406 in words is "one million, fifty-one thousand, four hundred six".