1401240 has 32 divisors (see below), whose sum is σ = 4204080. Its totient is φ = 373632.

The previous prime is 1401233. The next prime is 1401247. The reversal of 1401240 is 421041.

It is an interprime number because it is at equal distance from previous prime (1401233) and next prime (1401247).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401247) 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, 5719 + ... + 5958.

2^1401240 is an apocalyptic number.

1401240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401240 is an abundant number, since it is smaller than the sum of its proper divisors (2802840).

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

1401240 is a wasteful number, since it uses less digits than its factorization.

1401240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11691 (or 11687 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1401240 is about 1183.7398362816. The cubic root of 1401240 is about 111.9019124211.

Adding to 1401240 its reverse (421041), we get a palindrome (1822281).

The spelling of 1401240 in words is "one million, four hundred one thousand, two hundred forty".