143451420 has 144 divisors (see below), whose sum is σ = 475735680. Its totient is φ = 32194176.

The previous prime is 143451409. The next prime is 143451431. The reversal of 143451420 is 24154341.

It is an interprime number because it is at equal distance from previous prime (143451409) and next prime (143451431).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 173047 + ... + 173873.

It is an arithmetic number, because the mean of its divisors is an integer number (3303720).

Almost surely, 2^143451420 is an apocalyptic number.

143451420 is a gapful number since it is divisible by the number (10) 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 143451420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237867840).

143451420 is an abundant number, since it is smaller than the sum of its proper divisors (332284260).

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

143451420 is a wasteful number, since it uses less digits than its factorization.

143451420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 143451420 is about 11977.1206890471. The cubic root of 143451420 is about 523.4818363188.

The spelling of 143451420 in words is "one hundred forty-three million, four hundred fifty-one thousand, four hundred twenty".