400121130443 has 8 divisors (see below), whose sum is σ = 401011804560. Its totient is φ = 399231413280.

The previous prime is 400121130391. The next prime is 400121130463. The reversal of 400121130443 is 344031121004.

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 400121130443 - 2⁸ = 400121130187 is a prime.

It is a super-3 number, since 3×400121130443³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400121130463) 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, 601208 + ... + 1077818.

It is an arithmetic number, because the mean of its divisors is an integer number (50126475570).

Almost surely, 2^400121130443 is an apocalyptic number.

400121130443 is a deficient number, since it is larger than the sum of its proper divisors (890674117).

400121130443 is a wasteful number, since it uses less digits than its factorization.

400121130443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478477.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 400121130443 its reverse (344031121004), we get a palindrome (744152251447).

The spelling of 400121130443 in words is "four hundred billion, one hundred twenty-one million, one hundred thirty thousand, four hundred forty-three".