1421473992 has 64 divisors (see below), whose sum is σ = 3718716480. Its totient is φ = 452305152.

The previous prime is 1421473981. The next prime is 1421474003. The reversal of 1421473992 is 2993741241.

It is a happy number.

1421473992 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1421473981) and next prime (1421474003).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31963 + ... + 62165.

It is an arithmetic number, because the mean of its divisors is an integer number (58104945).

Almost surely, 2^1421473992 is an apocalyptic number.

1421473992 is a gapful number since it is divisible by the number (12) 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 1421473992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1859358240).

1421473992 is an abundant number, since it is smaller than the sum of its proper divisors (2297242488).

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

1421473992 is a wasteful number, since it uses less digits than its factorization.

1421473992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30302 (or 30298 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 1421473992 is about 37702.4401332328. The cubic root of 1421473992 is about 1124.3796394085.

The spelling of 1421473992 in words is "one billion, four hundred twenty-one million, four hundred seventy-three thousand, nine hundred ninety-two".