61532142 has 64 divisors (see below), whose sum is σ = 148608000. Its totient is φ = 16957920.

The previous prime is 61532131. The next prime is 61532143. The reversal of 61532142 is 24123516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61532143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59167 + ... + 60197.

It is an arithmetic number, because the mean of its divisors is an integer number (2322000).

Almost surely, 2^61532142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61532142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74304000).

61532142 is an abundant number, since it is smaller than the sum of its proper divisors (87075858).

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

61532142 is a wasteful number, since it uses less digits than its factorization.

61532142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1072 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 61532142 is about 7844.2426020617. The cubic root of 61532142 is about 394.7910917964.

Adding to 61532142 its reverse (24123516), we get a palindrome (85655658).

The spelling of 61532142 in words is "sixty-one million, five hundred thirty-two thousand, one hundred forty-two".