45542142 has 32 divisors (see below), whose sum is σ = 101429760. Its totient is φ = 15147000.

The previous prime is 45542141. The next prime is 45542143. The reversal of 45542142 is 24124554.

It is an interprime number because it is at equal distance from previous prime (45542141) and next prime (45542143).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45542141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39993 + ... + 41115.

It is an arithmetic number, because the mean of its divisors is an integer number (3169680).

Almost surely, 2^45542142 is an apocalyptic number.

45542142 is an abundant number, since it is smaller than the sum of its proper divisors (55887618).

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

45542142 is a wasteful number, since it uses less digits than its factorization.

45542142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885 (or 1879 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 45542142 is about 6748.4918315132. The cubic root of 45542142 is about 357.1120331950.

Adding to 45542142 its reverse (24124554), we get a palindrome (69666696).

The spelling of 45542142 in words is "forty-five million, five hundred forty-two thousand, one hundred forty-two".