1400421145 has 4 divisors (see below), whose sum is σ = 1680505380. Its totient is φ = 1120336912.

The previous prime is 1400421131. The next prime is 1400421167. The reversal of 1400421145 is 5411240041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 895924624 + 504496521 = 29932^2 + 22461^2 .

It is a cyclic number.

It is not a de Polignac number, because 1400421145 - 2⁹ = 1400420633 is a prime.

It is a super-2 number, since 2×1400421145² = 3922358766726222050, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 140042110 + ... + 140042119.

It is an arithmetic number, because the mean of its divisors is an integer number (420126345).

Almost surely, 2^1400421145 is an apocalyptic number.

It is an amenable number.

1400421145 is a deficient number, since it is larger than the sum of its proper divisors (280084235).

1400421145 is an equidigital number, since it uses as much as digits as its factorization.

1400421145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280084234.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1400421145 is about 37422.2012313546. The cubic root of 1400421145 is about 1118.8011047054.

Adding to 1400421145 its reverse (5411240041), we get a palindrome (6811661186).

The spelling of 1400421145 in words is "one billion, four hundred million, four hundred twenty-one thousand, one hundred forty-five".