1401402044 has 96 divisors (see below), whose sum is σ = 2949561216. Its totient is φ = 570286080.

The previous prime is 1401402011. The next prime is 1401402053. The reversal of 1401402044 is 4402041041.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10229144 + ... + 10229280.

It is an arithmetic number, because the mean of its divisors is an integer number (30724596).

Almost surely, 2^1401402044 is an apocalyptic number.

1401402044 is a gapful number since it is divisible by the number (14) 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 1401402044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474780608).

1401402044 is an abundant number, since it is smaller than the sum of its proper divisors (1548159172).

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

1401402044 is a wasteful number, since it uses less digits than its factorization.

1401402044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1401402044 is about 37435.3047803808. The cubic root of 1401402044 is about 1119.0622582314.

Adding to 1401402044 its reverse (4402041041), we get a palindrome (5803443085).

The spelling of 1401402044 in words is "one billion, four hundred one million, four hundred two thousand, forty-four".