42120032 has 12 divisors (see below), whose sum is σ = 82923876. Its totient is φ = 21060000.

The previous prime is 42120007. The next prime is 42120049. The reversal of 42120032 is 23002124.

It is a junction number, because it is equal to n+sod(n) for n = 42119989 and 42120016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658094 + ... + 658157.

It is an arithmetic number, because the mean of its divisors is an integer number (6910323).

Almost surely, 2^42120032 is an apocalyptic number.

It is an amenable number.

42120032 is a deficient number, since it is larger than the sum of its proper divisors (40803844).

42120032 is a wasteful number, since it uses less digits than its factorization.

42120032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316261 (or 1316253 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 42120032 is about 6489.9947611689. The cubic root of 42120032 is about 347.9334879712.

Adding to 42120032 its reverse (23002124), we get a palindrome (65122156).

The spelling of 42120032 in words is "forty-two million, one hundred twenty thousand, thirty-two".