142779630 has 192 divisors, whose sum is σ = 430230528. Its totient is φ = 30159360.

The previous prime is 142779629. The next prime is 142779631. The reversal of 142779630 is 36977241.

It is an interprime number because it is at equal distance from previous prime (142779629) and next prime (142779631).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142779631) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1386159 + ... + 1386261.

It is an arithmetic number, because the mean of its divisors is an integer number (2240784).

Almost surely, 2^142779630 is an apocalyptic number.

142779630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 142779630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215115264).

142779630 is an abundant number, since it is smaller than the sum of its proper divisors (287450898).

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

142779630 is a wasteful number, since it uses less digits than its factorization.

142779630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 142779630 is about 11949.0430579189. The cubic root of 142779630 is about 522.6633937224.

The spelling of 142779630 in words is "one hundred forty-two million, seven hundred seventy-nine thousand, six hundred thirty".