1118142 has 12 divisors (see below), whose sum is σ = 2422680. Its totient is φ = 372708.

The previous prime is 1118137. The next prime is 1118147. The reversal of 1118142 is 2418111.

It is an interprime number because it is at equal distance from previous prime (1118137) and next prime (1118147).

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 62119 = 1118142 / (1 + 1 + 1 + 8 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31042 + ... + 31077.

It is an arithmetic number, because the mean of its divisors is an integer number (201890).

2^1118142 is an apocalyptic number.

1118142 is an abundant number, since it is smaller than the sum of its proper divisors (1304538).

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

1118142 is a wasteful number, since it uses less digits than its factorization.

1118142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62127 (or 62124 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

The square root of 1118142 is about 1057.4223375738. The cubic root of 1118142 is about 103.7924237401.

The spelling of 1118142 in words is "one million, one hundred eighteen thousand, one hundred forty-two".