1421642124 has 96 divisors (see below), whose sum is σ = 4218762240. Its totient is φ = 405558144.

The previous prime is 1421642087. The next prime is 1421642137. The reversal of 1421642124 is 4212461241.

1421642124 is a `hidden beast` number, since 1 + 4 + 2 + 1 + 642 + 12 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

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, 742192 + ... + 744104.

It is an arithmetic number, because the mean of its divisors is an integer number (43945440).

Almost surely, 2^1421642124 is an apocalyptic number.

1421642124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421642124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2109381120).

1421642124 is an abundant number, since it is smaller than the sum of its proper divisors (2797120116).

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

1421642124 is a wasteful number, since it uses less digits than its factorization.

1421642124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916 (or 2908 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 1421642124 is about 37704.6697903589. The cubic root of 1421642124 is about 1124.4239682169.

It can be divided in two parts, 1421 and 642124, that added together give a triangular number (643545 = T₁₁₃₄).

The spelling of 1421642124 in words is "one billion, four hundred twenty-one million, six hundred forty-two thousand, one hundred twenty-four".