142157490 has 16 divisors (see below), whose sum is σ = 341178048. Its totient is φ = 37908656.

The previous prime is 142157489. The next prime is 142157497. The reversal of 142157490 is 94751241.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (142157497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2369262 + ... + 2369321.

It is an arithmetic number, because the mean of its divisors is an integer number (21323628).

Almost surely, 2^142157490 is an apocalyptic number.

142157490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142157490 is an abundant number, since it is smaller than the sum of its proper divisors (199020558).

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

142157490 is a wasteful number, since it uses less digits than its factorization.

142157490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738593.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 142157490 is about 11922.9815901896. The cubic root of 142157490 is about 521.9031469873.

The spelling of 142157490 in words is "one hundred forty-two million, one hundred fifty-seven thousand, four hundred ninety".