1054139 has 8 divisors (see below), whose sum is σ = 1122000. Its totient is φ = 987552.

The previous prime is 1054133. The next prime is 1054169. The reversal of 1054139 is 9314501.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1054139 - 2²⁰ = 5563 is a prime.

It is a super-2 number, since 2×1054139² = 2222418062642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1054133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1817 + ... + 2325.

It is an arithmetic number, because the mean of its divisors is an integer number (140250).

2^1054139 is an apocalyptic number.

1054139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1054139 is a deficient number, since it is larger than the sum of its proper divisors (67861).

1054139 is a wasteful number, since it uses less digits than its factorization.

1054139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1054139 is about 1026.7127154175. The cubic root of 1054139 is about 101.7730118373.

The spelling of 1054139 in words is "one million, fifty-four thousand, one hundred thirty-nine".