61021142 has 16 divisors (see below), whose sum is σ = 112654752. Its totient is φ = 24140160.

The previous prime is 61021127. The next prime is 61021151. The reversal of 61021142 is 24112016.

It is a self number, because there is not a number n which added to its sum of digits gives 61021142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167459 + ... + 167822.

It is an arithmetic number, because the mean of its divisors is an integer number (7040922).

Almost surely, 2^61021142 is an apocalyptic number.

61021142 is a deficient number, since it is larger than the sum of its proper divisors (51633610).

61021142 is a wasteful number, since it uses less digits than its factorization.

61021142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335303.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 61021142 is about 7811.6030365092. The cubic root of 61021142 is about 393.6951914306.

Adding to 61021142 its reverse (24112016), we get a palindrome (85133158).

The spelling of 61021142 in words is "sixty-one million, twenty-one thousand, one hundred forty-two".