1401123501 has 20 divisors (see below), whose sum is σ = 2097814752. Its totient is φ = 931949928.

The previous prime is 1401123491. The next prime is 1401123547. The reversal of 1401123501 is 1053211041.

1401123501 is a `hidden beast` number, since 1 + 40 + 1 + 123 + 501 = 666.

1401123501 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1401123501 - 2²² = 1396929197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401123571) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16360 + ... + 55406.

Almost surely, 2^1401123501 is an apocalyptic number.

It is an amenable number.

1401123501 is a deficient number, since it is larger than the sum of its proper divisors (696691251).

1401123501 is an equidigital number, since it uses as much as digits as its factorization.

1401123501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39502 (or 39493 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1401123501 is about 37431.5842705061. The cubic root of 1401123501 is about 1118.9881116261.

Adding to 1401123501 its reverse (1053211041), we get a palindrome (2454334542).

The spelling of 1401123501 in words is "one billion, four hundred one million, one hundred twenty-three thousand, five hundred one".