1400221242 has 80 divisors (see below), whose sum is σ = 3610252800. Its totient is φ = 397330272.

The previous prime is 1400221231. The next prime is 1400221253. The reversal of 1400221242 is 2421220041.

1400221242 is a `hidden beast` number, since 1 + 400 + 2 + 21 + 242 = 666.

It is an interprime number because it is at equal distance from previous prime (1400221231) and next prime (1400221253).

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 164823 + ... + 173109.

It is an arithmetic number, because the mean of its divisors is an integer number (45128160).

Almost surely, 2^1400221242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400221242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1805126400).

1400221242 is an abundant number, since it is smaller than the sum of its proper divisors (2210031558).

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

1400221242 is a wasteful number, since it uses less digits than its factorization.

1400221242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8457 (or 8448 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1400221242 is about 37419.5302215300. The cubic root of 1400221242 is about 1118.7478677820.

Adding to 1400221242 its reverse (2421220041), we get a palindrome (3821441283).

The spelling of 1400221242 in words is "one billion, four hundred million, two hundred twenty-one thousand, two hundred forty-two".