142155044 has 6 divisors (see below), whose sum is σ = 248771334. Its totient is φ = 71077520.

The previous prime is 142155031. The next prime is 142155059. The reversal of 142155044 is 440551241.

It can be written as a sum of positive squares in only one way, i.e., 142086400 + 68644 = 11920^2 + 262^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17769377 + ... + 17769384.

It is an arithmetic number, because the mean of its divisors is an integer number (41461889).

Almost surely, 2^142155044 is an apocalyptic number.

It is an amenable number.

142155044 is a deficient number, since it is larger than the sum of its proper divisors (106616290).

142155044 is a wasteful number, since it uses less digits than its factorization.

142155044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35538765 (or 35538763 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 142155044 is about 11922.8790147347. The cubic root of 142155044 is about 521.9001536348.

It can be divided in two parts, 1421 and 55044, that added together give a palindrome (56465).

The spelling of 142155044 in words is "one hundred forty-two million, one hundred fifty-five thousand, forty-four".