1401236530 has 8 divisors (see below), whose sum is σ = 2522225772. Its totient is φ = 560494608.

The previous prime is 1401236527. The next prime is 1401236561. The reversal of 1401236530 is 356321041.

It can be written as a sum of positive squares in 2 ways, for example, as 1190319001 + 210917529 = 34501^2 + 14523^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1401236495 and 1401236504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70061817 + ... + 70061836.

Almost surely, 2^1401236530 is an apocalyptic number.

1401236530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1401236530 is a deficient number, since it is larger than the sum of its proper divisors (1120989242).

1401236530 is a wasteful number, since it uses less digits than its factorization.

1401236530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140123660.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1401236530 is about 37433.0940479143. The cubic root of 1401236530 is about 1119.0182005051.

Adding to 1401236530 its reverse (356321041), we get a palindrome (1757557571).

The spelling of 1401236530 in words is "one billion, four hundred one million, two hundred thirty-six thousand, five hundred thirty".