1421131500 has 96 divisors (see below), whose sum is σ = 4598193600. Its totient is φ = 378964800.

The previous prime is 1421131493. The next prime is 1421131511. The reversal of 1421131500 is 51311241.

1421131500 is a `hidden beast` number, since 14 + 21 + 131 + 500 = 666.

It is a super-2 number, since 2×1421131500² = 4039229480584500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39135 + ... + 66134.

It is an arithmetic number, because the mean of its divisors is an integer number (47897850).

Almost surely, 2^1421131500 is an apocalyptic number.

1421131500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421131500 is an abundant number, since it is smaller than the sum of its proper divisors (3177062100).

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

1421131500 is a wasteful number, since it uses less digits than its factorization.

1421131500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105297 (or 105279 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1421131500 is about 37697.8978193745. The cubic root of 1421131500 is about 1124.2893289360.

Adding to 1421131500 its reverse (51311241), we get a palindrome (1472442741).

The spelling of 1421131500 in words is "one billion, four hundred twenty-one million, one hundred thirty-one thousand, five hundred".