1139562 has 32 divisors (see below), whose sum is σ = 2592000. Its totient is φ = 370944.

The previous prime is 1139557. The next prime is 1139573. The reversal of 1139562 is 2659311.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a plaindrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2314 + ... + 2762.

It is an arithmetic number, because the mean of its divisors is an integer number (81000).

2^1139562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1139562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1296000).

1139562 is an abundant number, since it is smaller than the sum of its proper divisors (1452438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1139562 is a wasteful number, since it uses less digits than its factorization.

1139562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507 (or 501 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 1139562 is about 1067.5026932050. The cubic root of 1139562 is about 104.4510121953.

The spelling of 1139562 in words is "one million, one hundred thirty-nine thousand, five hundred sixty-two".