401432121 has 6 divisors (see below), whose sum is σ = 579846410. Its totient is φ = 267621408.

The previous prime is 401432111. The next prime is 401432131. The reversal of 401432121 is 121234104.

It is an interprime number because it is at equal distance from previous prime (401432111) and next prime (401432131).

It can be written as a sum of positive squares in only one way, i.e., 290361600 + 111070521 = 17040^2 + 10539^2 .

It is not a de Polignac number, because 401432121 - 2⁵ = 401432089 is a prime.

It is a super-2 number, since 2×401432121² = 322295495541117282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401432094 and 401432103.

It is not an unprimeable number, because it can be changed into a prime (401432111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22301776 + ... + 22301793.

Almost surely, 2^401432121 is an apocalyptic number.

It is an amenable number.

401432121 is a deficient number, since it is larger than the sum of its proper divisors (178414289).

401432121 is a wasteful number, since it uses less digits than its factorization.

401432121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44603575 (or 44603572 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 401432121 is about 20035.7710358249. The cubic root of 401432121 is about 737.6845822005.

Adding to 401432121 its reverse (121234104), we get a palindrome (522666225).

The spelling of 401432121 in words is "four hundred one million, four hundred thirty-two thousand, one hundred twenty-one".