1401655426 has 4 divisors (see below), whose sum is σ = 2102483142. Its totient is φ = 700827712.

The previous prime is 1401655399. The next prime is 1401655429. The reversal of 1401655426 is 6245561041.

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., 1382724225 + 18931201 = 37185^2 + 4351^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1401655391 and 1401655400.

It is not an unprimeable number, because it can be changed into a prime (1401655429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350413855 + ... + 350413858.

Almost surely, 2^1401655426 is an apocalyptic number.

1401655426 is a deficient number, since it is larger than the sum of its proper divisors (700827716).

1401655426 is an equidigital number, since it uses as much as digits as its factorization.

1401655426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700827715.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 1401655426 is about 37438.6888926415. The cubic root of 1401655426 is about 1119.1296985844.

The spelling of 1401655426 in words is "one billion, four hundred one million, six hundred fifty-five thousand, four hundred twenty-six".