146402271144 has 48 divisors (see below), whose sum is σ = 396728135700. Its totient is φ = 48773435904.

The previous prime is 146402271139. The next prime is 146402271161. The reversal of 146402271144 is 441172204641.

146402271144 is a `hidden beast` number, since 1 + 4 + 640 + 2 + 2 + 7 + 1 + 1 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 134074610244 + 12327660900 = 366162^2 + 111030^2 .

It is a super-2 number, since 2×146402271144² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 146402271099 and 146402271108.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 439489 + ... + 697104.

Almost surely, 2^146402271144 is an apocalyptic number.

It is an amenable number.

146402271144 is an abundant number, since it is smaller than the sum of its proper divisors (250325864556).

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

146402271144 is a wasteful number, since it uses less digits than its factorization.

146402271144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138394 (or 1138387 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

Adding to 146402271144 its reverse (441172204641), we get a palindrome (587574475785).

The spelling of 146402271144 in words is "one hundred forty-six billion, four hundred two million, two hundred seventy-one thousand, one hundred forty-four".