142623730 has 16 divisors (see below), whose sum is σ = 258572160. Its totient is φ = 56638512.

The previous prime is 142623721. The next prime is 142623731. The reversal of 142623730 is 37326241.

It is a super-2 number, since 2×142623730² = 40683056718225800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142623731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49914 + ... + 52693.

It is an arithmetic number, because the mean of its divisors is an integer number (16160760).

Almost surely, 2^142623730 is an apocalyptic number.

142623730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142623730 is a deficient number, since it is larger than the sum of its proper divisors (115948430).

142623730 is a wasteful number, since it uses less digits than its factorization.

142623730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102753.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 142623730 is about 11942.5177412470. The cubic root of 142623730 is about 522.4730937054.

Adding to 142623730 its reverse (37326241), we get a palindrome (179949971).

The spelling of 142623730 in words is "one hundred forty-two million, six hundred twenty-three thousand, seven hundred thirty".