1121642401 has 8 divisors (see below), whose sum is σ = 1252066464. Its totient is φ = 995961120.

The previous prime is 1121642393. The next prime is 1121642413. The reversal of 1121642401 is 1042461211.

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

It is not a de Polignac number, because 1121642401 - 2³ = 1121642393 is a prime.

It is a super-3 number, since 3×1121642401³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121642491) 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, 1185196 + ... + 1186141.

It is an arithmetic number, because the mean of its divisors is an integer number (156508308).

Almost surely, 2^1121642401 is an apocalyptic number.

1121642401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121642401 is a deficient number, since it is larger than the sum of its proper divisors (130424063).

1121642401 is a wasteful number, since it uses less digits than its factorization.

1121642401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371391.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1121642401 is about 33490.9301304099. The cubic root of 1121642401 is about 1039.0062008614.

The spelling of 1121642401 in words is "one billion, one hundred twenty-one million, six hundred forty-two thousand, four hundred one".