1400540423 has 8 divisors (see below), whose sum is σ = 1444162608. Its totient is φ = 1357555264.

The previous prime is 1400540389. The next prime is 1400540473. The reversal of 1400540423 is 3240450041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1400540423 - 2²⁶ = 1333431559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400540473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154790 + ... + 163587.

It is an arithmetic number, because the mean of its divisors is an integer number (180520326).

Almost surely, 2^1400540423 is an apocalyptic number.

1400540423 is a deficient number, since it is larger than the sum of its proper divisors (43622185).

1400540423 is an equidigital number, since it uses as much as digits as its factorization.

1400540423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318513.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1400540423 is about 37423.7948770565. The cubic root of 1400540423 is about 1118.8328676671.

Adding to 1400540423 its reverse (3240450041), we get a palindrome (4640990464).

The spelling of 1400540423 in words is "one billion, four hundred million, five hundred forty thousand, four hundred twenty-three".