1401420434 has 4 divisors (see below), whose sum is σ = 2102130654. Its totient is φ = 700710216.

The previous prime is 1401420431. The next prime is 1401420469. The reversal of 1401420434 is 4340241041.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1401379225 + 41209 = 37435^2 + 203^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1401420431) 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 as a sum of consecutive naturals, namely, 350355107 + ... + 350355110.

Almost surely, 2^1401420434 is an apocalyptic number.

1401420434 is a deficient number, since it is larger than the sum of its proper divisors (700710220).

1401420434 is an equidigital number, since it uses as much as digits as its factorization.

1401420434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700710219.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1401420434 is about 37435.5504033265. The cubic root of 1401420434 is about 1119.0671532018.

Adding to 1401420434 its reverse (4340241041), we get a palindrome (5741661475).

The spelling of 1401420434 in words is "one billion, four hundred one million, four hundred twenty thousand, four hundred thirty-four".