1400742 has 24 divisors (see below), whose sum is σ = 3468816. Its totient is φ = 400176.

The previous prime is 1400731. The next prime is 1400747. The reversal of 1400742 is 2470041.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5433 + ... + 5684.

It is an arithmetic number, because the mean of its divisors is an integer number (144534).

2^1400742 is an apocalyptic number.

1400742 is an abundant number, since it is smaller than the sum of its proper divisors (2068074).

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

1400742 is a wasteful number, since it uses less digits than its factorization.

1400742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11132 (or 11129 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 1400742 is about 1183.5294673138. The cubic root of 1400742 is about 111.8886542223. Note that the first 3 decimals are identical.

Adding to 1400742 its reverse (2470041), we get a palindrome (3870783).

The spelling of 1400742 in words is "one million, four hundred thousand, seven hundred forty-two".