1140421999 has 8 divisors (see below), whose sum is σ = 1208024928. Its totient is φ = 1072876800.

The previous prime is 1140421993. The next prime is 1140422057. The reversal of 1140421999 is 9991240411.

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

It is not a de Polignac number, because 1140421999 - 2⁵ = 1140421967 is a prime.

It is a super-3 number, since 3×1140421999³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140421993) 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, 30219 + ... + 56515.

It is an arithmetic number, because the mean of its divisors is an integer number (151003116).

Almost surely, 2^1140421999 is an apocalyptic number.

1140421999 is a deficient number, since it is larger than the sum of its proper divisors (67602929).

1140421999 is a wasteful number, since it uses less digits than its factorization.

1140421999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28865.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 1140421999 is about 33770.1347198971. The cubic root of 1140421999 is about 1044.7728111229.

The spelling of 1140421999 in words is "one billion, one hundred forty million, four hundred twenty-one thousand, nine hundred ninety-nine".