1421751152 has 40 divisors (see below), whose sum is σ = 2907432960. Its totient is φ = 671647680.

The previous prime is 1421751119. The next prime is 1421751161. The reversal of 1421751152 is 2511571241.

It is a congruent number.

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, 110327 + ... + 122537.

It is an arithmetic number, because the mean of its divisors is an integer number (72685824).

Almost surely, 2^1421751152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421751152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1453716480).

1421751152 is an abundant number, since it is smaller than the sum of its proper divisors (1485681808).

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

1421751152 is a wasteful number, since it uses less digits than its factorization.

1421751152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12621 (or 12615 counting only the distinct ones).

The product of its digits is 2800, while the sum is 29.

The square root of 1421751152 is about 37706.1155782454. The cubic root of 1421751152 is about 1124.4527121041.

The spelling of 1421751152 in words is "one billion, four hundred twenty-one million, seven hundred fifty-one thousand, one hundred fifty-two".