49143402 has 128 divisors (see below), whose sum is σ = 139345920. Its totient is φ = 12467520.

The previous prime is 49143383. The next prime is 49143449. The reversal of 49143402 is 20434194.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 220263 + ... + 220485.

It is an arithmetic number, because the mean of its divisors is an integer number (1088640).

Almost surely, 2^49143402 is an apocalyptic number.

49143402 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

49143402 is the 5724-th pentagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49143402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69672960).

49143402 is an abundant number, since it is smaller than the sum of its proper divisors (90202518).

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

49143402 is a wasteful number, since it uses less digits than its factorization.

49143402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 49143402 is about 7010.2355167284. The cubic root of 49143402 is about 366.2871973154.

Adding to 49143402 its reverse (20434194), we get a palindrome (69577596).

The spelling of 49143402 in words is "forty-nine million, one hundred forty-three thousand, four hundred two".