1400642005 has 32 divisors (see below), whose sum is σ = 1961625600. Its totient is φ = 940206912.

The previous prime is 1400642003. The next prime is 1400642011. The reversal of 1400642005 is 5002460041.

It is a cyclic number.

It is not a de Polignac number, because 1400642005 - 2¹ = 1400642003 is a prime.

It is a super-3 number, since 3×1400642005³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400642003) by changing a digit.

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, 541806 + ... + 544384.

It is an arithmetic number, because the mean of its divisors is an integer number (61300800).

Almost surely, 2^1400642005 is an apocalyptic number.

It is an amenable number.

1400642005 is a deficient number, since it is larger than the sum of its proper divisors (560983595).

1400642005 is a wasteful number, since it uses less digits than its factorization.

1400642005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2913.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1400642005 is about 37425.1520370993. The cubic root of 1400642005 is about 1118.8599168763.

The spelling of 1400642005 in words is "one billion, four hundred million, six hundred forty-two thousand, five".