1401442340 has 48 divisors (see below), whose sum is σ = 3073896000. Its totient is φ = 536164992.

The previous prime is 1401442307. The next prime is 1401442351. The reversal of 1401442340 is 432441041.

It is a happy number.

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, 27611 + ... + 59709.

It is an arithmetic number, because the mean of its divisors is an integer number (64039500).

Almost surely, 2^1401442340 is an apocalyptic number.

1401442340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1401442340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1536948000).

1401442340 is an abundant number, since it is smaller than the sum of its proper divisors (1672453660).

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

1401442340 is a wasteful number, since it uses less digits than its factorization.

1401442340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32204 (or 32202 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1401442340 is about 37435.8429850324. The cubic root of 1401442340 is about 1119.0729839901.

Adding to 1401442340 its reverse (432441041), we get a palindrome (1833883381).

The spelling of 1401442340 in words is "one billion, four hundred one million, four hundred forty-two thousand, three hundred forty".