1154699421 has 8 divisors (see below), whose sum is σ = 1540603200. Its totient is φ = 769297632.

The previous prime is 1154699417. The next prime is 1154699437. The reversal of 1154699421 is 1249964511.

It is a happy number.

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

It is not a de Polignac number, because 1154699421 - 2² = 1154699417 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154699401) 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, 120096 + ... + 129353.

It is an arithmetic number, because the mean of its divisors is an integer number (192575400).

Almost surely, 2^1154699421 is an apocalyptic number.

It is an amenable number.

1154699421 is a deficient number, since it is larger than the sum of its proper divisors (385903779).

1154699421 is a wasteful number, since it uses less digits than its factorization.

1154699421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250995.

The product of its digits is 77760, while the sum is 42.

The square root of 1154699421 is about 33980.8684556472. The cubic root of 1154699421 is about 1049.1147250194.

The spelling of 1154699421 in words is "one billion, one hundred fifty-four million, six hundred ninety-nine thousand, four hundred twenty-one".