145402233420 has 48 divisors (see below), whose sum is σ = 409400732160. Its totient is φ = 38557311936.

The previous prime is 145402233419. The next prime is 145402233467. The reversal of 145402233420 is 24332204541.

It is a super-3 number, since 3×145402233420³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 6758452 + ... + 6779931.

It is an arithmetic number, because the mean of its divisors is an integer number (8529181920).

Almost surely, 2^145402233420 is an apocalyptic number.

145402233420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145402233420 is an abundant number, since it is smaller than the sum of its proper divisors (263998498740).

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

145402233420 is a wasteful number, since it uses less digits than its factorization.

145402233420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13538574 (or 13538572 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 145402233420 its reverse (24332204541), we get a palindrome (169734437961).

The spelling of 145402233420 in words is "one hundred forty-five billion, four hundred two million, two hundred thirty-three thousand, four hundred twenty".