1154020401 has 24 divisors (see below), whose sum is σ = 1773386784. Its totient is φ = 720639360.

The previous prime is 1154020397. The next prime is 1154020409. The reversal of 1154020401 is 1040204511.

It is not a de Polignac number, because 1154020401 - 2² = 1154020397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1154020409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14410 + ... + 50156.

It is an arithmetic number, because the mean of its divisors is an integer number (73891116).

Almost surely, 2^1154020401 is an apocalyptic number.

It is an amenable number.

1154020401 is a deficient number, since it is larger than the sum of its proper divisors (619366383).

1154020401 is a wasteful number, since it uses less digits than its factorization.

1154020401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35981 (or 35978 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1154020401 is about 33970.8757761704. The cubic root of 1154020401 is about 1048.9090410265.

Adding to 1154020401 its reverse (1040204511), we get a palindrome (2194224912).

The spelling of 1154020401 in words is "one billion, one hundred fifty-four million, twenty thousand, four hundred one".