1401185420 has 12 divisors (see below), whose sum is σ = 2942489424. Its totient is φ = 560474160.

The previous prime is 1401185347. The next prime is 1401185453. The reversal of 1401185420 is 245811041.

It is a self number, because there is not a number n which added to its sum of digits gives 1401185420.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35029616 + ... + 35029655.

It is an arithmetic number, because the mean of its divisors is an integer number (245207452).

Almost surely, 2^1401185420 is an apocalyptic number.

1401185420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401185420 is an abundant number, since it is smaller than the sum of its proper divisors (1541304004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1401185420 is a wasteful number, since it uses less digits than its factorization.

1401185420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70059280 (or 70059278 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1401185420 is about 37432.4113570045. The cubic root of 1401185420 is about 1119.0045949706.

Adding to 1401185420 its reverse (245811041), we get a palindrome (1646996461).

The spelling of 1401185420 in words is "one billion, four hundred one million, one hundred eighty-five thousand, four hundred twenty".