1140421506 has 32 divisors (see below), whose sum is σ = 2760013440. Its totient is φ = 306667776.

The previous prime is 1140421501. The next prime is 1140421567. The reversal of 1140421506 is 6051240411.

It is a happy number.

It is a super-2 number, since 2×1140421506² = 2601122422694616072, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1140421501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797901 + ... + 799328.

It is an arithmetic number, because the mean of its divisors is an integer number (86250420).

Almost surely, 2^1140421506 is an apocalyptic number.

1140421506 is an abundant number, since it is smaller than the sum of its proper divisors (1619591934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1140421506 is a wasteful number, since it uses less digits than its factorization.

1140421506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597258.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1140421506 is about 33770.1274205473. The cubic root of 1140421506 is about 1044.7726605724.

Adding to 1140421506 its reverse (6051240411), we get a palindrome (7191661917).

The spelling of 1140421506 in words is "one billion, one hundred forty million, four hundred twenty-one thousand, five hundred six".