49142390 has 32 divisors (see below), whose sum is σ = 97044480. Its totient is φ = 17768800.

The previous prime is 49142389. The next prime is 49142399. The reversal of 49142390 is 9324194.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49142399) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19841 + ... + 22179.

It is an arithmetic number, because the mean of its divisors is an integer number (3032640).

Almost surely, 2^49142390 is an apocalyptic number.

49142390 is a deficient number, since it is larger than the sum of its proper divisors (47902090).

49142390 is a wasteful number, since it uses less digits than its factorization.

49142390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2548.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 49142390 is about 7010.1633361855. The cubic root of 49142390 is about 366.2846830058.

The spelling of 49142390 in words is "forty-nine million, one hundred forty-two thousand, three hundred ninety".