1401402045 has 16 divisors (see below), whose sum is σ = 2243189952. Its totient is φ = 747098880.

The previous prime is 1401402011. The next prime is 1401402053. The reversal of 1401402045 is 5402041041.

It is a happy number.

It is not a de Polignac number, because 1401402045 - 2¹¹ = 1401399997 is a prime.

It is a congruent 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, 19509 + ... + 56421.

It is an arithmetic number, because the mean of its divisors is an integer number (140199372).

Almost surely, 2^1401402045 is an apocalyptic number.

1401402045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1401402045 is a deficient number, since it is larger than the sum of its proper divisors (841787907).

1401402045 is a wasteful number, since it uses less digits than its factorization.

1401402045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39452.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1401402045 is about 37435.3047937372. The cubic root of 1401402045 is about 1119.0622584975.

Adding to 1401402045 its reverse (5402041041), we get a palindrome (6803443086).

The spelling of 1401402045 in words is "one billion, four hundred one million, four hundred two thousand, forty-five".