1401235121 has 8 divisors (see below), whose sum is σ = 1646206464. Its totient is φ = 1175861520.

The previous prime is 1401235117. The next prime is 1401235151. The reversal of 1401235121 is 1215321041.

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

It is a cyclic number.

It is not a de Polignac number, because 1401235121 - 2² = 1401235117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1401235093 and 1401235102.

It is not an unprimeable number, because it can be changed into a prime (1401235151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4899281 + ... + 4899566.

It is an arithmetic number, because the mean of its divisors is an integer number (205775808).

Almost surely, 2^1401235121 is an apocalyptic number.

1401235121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1401235121 is a deficient number, since it is larger than the sum of its proper divisors (244971343).

1401235121 is a wasteful number, since it uses less digits than its factorization.

1401235121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9798871.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1401235121 is about 37433.0752276646. The cubic root of 1401235121 is about 1119.0178254323.

Adding to 1401235121 its reverse (1215321041), we get a palindrome (2616556162).

The spelling of 1401235121 in words is "one billion, four hundred one million, two hundred thirty-five thousand, one hundred twenty-one".