1421124240 has 40 divisors (see below), whose sum is σ = 4405485888. Its totient is φ = 378966400.

The previous prime is 1421124179. The next prime is 1421124283. The reversal of 1421124240 is 424211241.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2960436 + ... + 2960915.

Almost surely, 2^1421124240 is an apocalyptic number.

1421124240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421124240 is an abundant number, since it is smaller than the sum of its proper divisors (2984361648).

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

1421124240 is a wasteful number, since it uses less digits than its factorization.

1421124240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5921367 (or 5921361 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1421124240 is about 37697.8015274101. The cubic root of 1421124240 is about 1124.2874144159.

Adding to 1421124240 its reverse (424211241), we get a palindrome (1845335481).

The spelling of 1421124240 in words is "one billion, four hundred twenty-one million, one hundred twenty-four thousand, two hundred forty".